HP ProLiant DL980 Universal Database Solution

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1 Technical white paper HP ProLiant DL980 Universal Database Solution HP Serviceguard for Linux and 3PAR StoreServ for Oracle Enterprise Database Table of contents Executive summary... 2 Overview... 3 HP Serviceguard for Linux... 3 HP ProLiant DL980 G7 server... 4 HP 3PAR StoreServ storage array... 4 HP ProLiant DL980 Universal Database Solution... 5 Building the solution... 8 Software and hardware components... 8 Hardware setup... 8 Install Red Hat Enterprise Linux Server Install Oracle GRID Infrastructure Install Oracle Enterprise Database Install HP Serviceguard for Linux Set up HP Serviceguard for Linux cluster Set up HP Serviceguard for Linux ASM multinode package Set up HP Serviceguard for Linux PROD failover package Set up HP Serviceguard for Linux TEST failover package High-Availability testing Test description Test results Conclusion Appendix A: Red Hat Enterprise Linux Server 6.2 installation Appendix B: Oracle GRID Infrastructure 11gR2 installation Appendix C: Oracle Enterprise Database Edition 11gR2 installation Appendix D: HP Serviceguard for Linux A installation Appendix E: HP Serviceguard for Linux cluster setup Appendix F: HP Serviceguard for Linux ASM package setup Appendix G: HP Serviceguard for Linux PROD package setup Appendix H: HP Serviceguard for Linux TEST package setup Appendix I: Bill of Materials For more information... 41

2 Executive summary The HP ProLiant DL980 Universal Database Solution is HP s large-scale, mission-critical, x86 database solution. Providing preconfigured, tested solutions with a choice of operating systems, storage, and databases. It delivers advanced reliability, availability, and serviceability (RAS) capabilities, enabling the high-end scalability and availability traditionally associated with RISC and mainframe systems at a fraction of the cost. HP s newest ProLiant DL980 Universal Database Solution for Oracle Databases combines high-performance HP ProLiant DL980 G7 server technology, HP 3PAR StoreServ storage technology and HP Serviceguard for Linux in a missioncritical solution designed specifically for large transactional (OLTP) and data warehousing (DSS) workloads. Additional information can be found on the HP ProLiant DL980 Universal Database Solution website. When compared to similar highlyavailable configurations, this solution: Lowers TCO by reducing power consumption, cooling, and space while improving performance. Reduce storage capacity as much as 50%. 1 Boosts system availability by as much as 200%. 2 Provides extreme performance for large-scale applications 3 and virtualization environments. The heart of this solution is the powerful HP ProLiant DL980 G7 server, the industry s most popular, highly reliable, and comprehensively scalable eight-socket x86 server offering. The DL980 G7 server leverages HP s years of experience designing mission-critical servers in RISC, EPIC, and UNIX environments. This design capitalizes on over a hundred innovative availability features to deliver a portfolio of resilient and highly reliable scale-up x86 servers in a compact 8U rack form factor. Additional information can be found on the HP ProLiant DL980 G7 website. Some of the key scalability and reliability features of the DL980 G7 server are: 4 or 8 Intel Xeon Processors with up to 10 cores per central processing unit (CPU) From 128GB to 4TB of memory Up to 8 internal hot-swappable drives with built in hardware RAID Redundant system links to provide resilient data paths Storage for this solution is delivered with the HP 3PAR StoreServ Series Tier 1 Storage Array designed to deliver enterprise IT as a utility service simply, efficiently, and flexibly. The arrays feature a tightly coupled clustered architecture, secure multi-tenancy, and mixed workload support for enterprise-class data centers. Additional information can be found on the HP 3PAR StoreServ website. Several key 3PAR StoreServ features are: Multi-tenant capabilities for managing unpredictable workloads. Save up to 90% of administrator time. 4 Silicon-based engine providing on-the-fly storage optimization. Full Mesh active-active cluster design for robust performance and high-availability. The HP Serviceguard for Linux is the high availability clustering software used in this solution and is designed to protect applications and services from planned and unplanned downtime. The HP Serviceguard Solutions for Linux portfolio also includes numerous implementation toolkits that enable you to easily integrate various databases and open source applications into a Serviceguard cluster and three distinct disaster recovery options. Additional information can be found on the HP Serviceguard for Linux website. Some of the key features of HP Serviceguard for Linux are: Robust monitoring to protection against system, software, network and storage faults Advance cluster arbitration and fencing mechanisms to prevent data corruption or loss GUI and CLI management interfaces Quick and accurate cluster package creation 1 Requires the use of HP 3PAR Thin Conversion Software and HP 3PAR Thin Provisioning Software. For details, refer to the Get Thin Guarantee Terms and Conditions. More information is available at: hp.com/storage/getthin. 2 Based on system crash rates comparison between the ProLiant DL980 G7 servers to the ProLiant DL785 G5 servers. System crash rate is determined by availability features such as hot-swap components, resilient paths, ECC, and tolerant links such as QPI. 3 Based on the TPC-H price performance per query results for non-clustered systems at 3000 GB. 4 Based on HP Storage customer results, available from HP Storage Customer success stories. 2

3 These components, when combined with Oracle Database Enterprise Edition software, create a multi-node solution which protects against system and database instance failures by eliminating the single points of failure. Many customers today desire to have highly performing, highly available Oracle database solutions but do not want the high cost or the inflexibility of all-oracle-stack solutions. Indeed, our high-performance Oracle Database solution is much simpler and more flexible than competing Oracle solutions, and because it is based on open standards, the HP solution: Supports various database software versions, operating systems and patch levels. Allows you to update, expand or extend your server environment as your needs change. Gives you the choice of support and service offerings. HP is a leading platform for Oracle solutions and continues to invest heavily with Oracle focused resources worldwide to provide cost effective open and standards-based architecture alternatives using converged infrastructure. Customer performance workload characteristics and requirements vary and HP has solutions tailored to provide maximum performance for each specific workload without compromising on required availability commitments to the business. Target audience: This HP white paper was written for IT professionals who use, program, manage, or administer Oracle databases that require high availability and specifically for those who design, evaluate, or recommend new IT high performance architectures. This white paper describes testing performed between November 2012 and February Overview This paper will provide the details of the HP ProLiant DL980 Universal Database Solution for Oracle Enterprise Database Edition 11gR2. We will focus primarily on the configuration, build, and high-availability test results to aid in designing and deploying mission-critical, high performance database solutions for Oracle databases. A brief overview of the major HP components used in this solution: HP Serviceguard for Linux HP ProLiant DL980 G7 server HP 3PAR StoreServ storage array An overview of the HP ProLiant DL980 Universal Database Solution with details on building the solution: HP ProLiant DL980 Universal Database Solution Building the solution A description of the high-availability testing performed, the database and workload used during that testing, results of the tests, and the final conclusion: Test description Database and workload defined Test results Conclusion HP Serviceguard for Linux HP Serviceguard for Linux is high-availability clustering software that manages the systems, software, network, and storage for a mission-critical solution. The environment is continuously monitored for any faults and when a failure or threshold violation is detected, Serviceguard for Linux can automatically and transparently resume normal operations in mere seconds without compromising data integrity and performance. HP Serviceguard Solutions for Linux are designed to address the financial, business and operational impacts of planned and unplanned downtime in demanding mission critical Linux environments. With HP Serviceguard Solutions for Linux, you can define, implement, and manage solutions that help to secure your infrastructure, protect data and information, and align business continuity objectives to business requirements. See Table 1 for features and benefits of HP Serviceguard for Linux. 3

4 Table 1. HP Serviceguard for Linux features and benefits Features High data integrity Zero downtime maintenance Shortened cluster setup Disaster recovery capability Simplified cluster management Benefits HP offers Quorum Service, a robust fencing mechanism that allows Serviceguard for Linux to ensure the highest level of data integrity and reliability. A key feature called Live Application Detach (LAD) allows you to perform maintenance on the Serviceguard cluster infrastructure (including the heartbeat network) with zero application downtime. 5 The Toolkits and Extensions portfolio offers predefined scripts that allow up to 93% of the setup time it takes to get an application protected. 6 HP Serviceguard Disaster Recovery Solutions for Linux enable you to remain online even after the loss of a data center, regardless of the distance. HP Serviceguard Manager for Linux allows users to visually configure, monitor, manage and administer a cluster and its components. HP Serviceguard Manager is also integrated with HP Systems Insight Manager (HP SIM) to enable management of multiple clusters running on Linux or HP-UX from a single browser. 5 Based on HP Lab analysis while performing maintenance activities of the cluster including maintenance of the heartbeat network, it used to be a common case where the application had to be brought down. However, with the LAD feature it is noticed that the application downtime has been reduced to none even if the heartbeat network is maintained and the cluster is brought down. 6 Based on HP Lab analysis that show typical manual effort for integrating Oracle Database into a cluster to require 30 engineering days. With Oracle toolkit from HP, this integration is achieved in two engineering days or less. HP ProLiant DL980 G7 server HP ProLiant DL980 G7 with HP PREMA Architecture is an eight socket server built to handle the largest x86 enterprise environments. Ideal choice for large scale databases with extreme workloads such as I/O intensive online transaction processing (OLTP) or compute intensive decision support system (DSS). Database consolidation or server virtualization is also an ideal fit for the DL980 s scale-up design. The DL980 G7 blends industry standard economies with advanced mission critical capabilities to deliver balanced scaling, self-healing resiliency and breakthrough efficiencies essential for enterprise compute environments. Operating costs are reduced with less overall maintenance, lower energy use, reduced cooling, and floor space requirements. The HP PREMA Architecture features Smart CPU caching and a resilient system fabric to reduce bottlenecks, improve throughput and performance, as well as deliver enhanced reliability not previously available in an x86 environment System management is provided by HP Integrated Lights-Out Management (ilo) and simplifies server setup, remote system management and integrates with HP Systems Insight Manager (SIM) and HP Insight Control. HP 3PAR StoreServ storage array The HP 3PAR StoreServ storage arrays are designed to deliver enterprise IT storage as a utility service simply, efficiently, and flexibly. The arrays feature a tightly coupled clustered architecture, secure multi-tenancy, and mixed workload support for enterprise-class data centers. Use of unique thin technologies reduces acquisition and operational costs by up to 50% while autonomic management features improve administrative efficiency by up to tenfold when compared with traditional storage solutions. The HP 3PAR StoreServ Gen4 ASIC in each of the system s controller nodes provides a hyper-efficient, silicon-based engine that drives on-the-fly storage optimization to maximize capacity utilization while delivering high service levels. Increase business agility Autonomic service level optimization through the use of optional HP 3PAR Dynamic Optimization (DO) and Adaptive Optimization (AO) software delivers the agility to react quickly to changing application and infrastructure requirements without the need for active management. Optional HP 3PAR Virtual Domains software, the first and only storage hypervisor-like technology on the market to deliver customized, secure, and self-service storage to multiple internal or external customers. Reduce Total Cost of Ownership (TCO) Advanced internal virtualization, wide striping, and mixed workload support reduce physical capacity purchases, storage footprint, power usage, and cooling needs without compromising performance. The two HP 3PAR StoreServ Gen4 ASICs with Thin Built In inside every controller node have the ability to drive siliconbased thin conversion to reduce legacy storage capacity requirements and reclaim allocated-but-unused capacity. 4

5 Optional HP 3PAR Thin Provisioning software eliminates capacity waste by allowing clients to purchase only the disk capacity they actually need, only as they actually need it for written data. Fast RAID 5 boosts RAID 5 performance to within 10% of RAID 1 but with significantly less capacity overhead; Fast RAID 6 (RAID MP) delivers enhanced protection while maintaining performance levels within 15% of RAID 10 and with capacity overheads comparable to popular RAID 5. HP ProLiant DL980 Universal Database Solution The development of the HP ProLiant DL980 Universal Database solution with Serviceguard for Linux focused on the building and testing of a large-scale, highly available Oracle Database Enterprise Edition 11gR2 for Red Hat Enterprise Linux 6.2 x86-64 environments. The large-scale platform consisted of HP ProLiant DL980 G7 servers and an HP 3PAR StoreServ storage array. High-availability was provided by HP Serviceguard for Linux, redundant 8Gb FC links for SAN connectivity, and two redundant 10GbE links for both private and public networks. To take advantage of the resources of the standby node, steps were included to configure an optional secondary database. High-availability testing focused on HP Serviceguard s ability to monitor the health of the primary database instance and manage the failover of the instance to a standby node in the event of an active node failure. Failover tests were performed with the database under a heavy OLTP load and in an idle state. The environment was isolated within a private network with access only through an HP ProLiant DL380 G7 gateway access server running Microsoft Windows Server 2008 R2. This server also provided the management console, DNS and NTP services for the environment. A second DL380 G7 installed with Red Hat Enterprise Linux Server 6.2 was configured as the client load generator and housed the database workload software. The networks were comprised of two redundant 10GbE links for public and private communications and a single 1GbE link for system management. The redundant network links were set up in an active-passive mode using the Red Hat Linux NIC bonding driver. The public network was dedicated for client load and the private network was dedicated for Serviceguard cluster communications. The management LAN connected the server s ilo system management ports and the management ports for the switches supporting the environment. The Storage Area Network (SAN) comprised of two 8Gb fibre channel paths between the DL980 servers, fibre channel switches, and the 3PAR StoreServ array. Zoning was configured on the SAN switches to limit the server to storage fibre channel connections to two paths. The redundant FC links were set up using the Linux multipath driver in an activeactive mode providing both redundancy and load balancing for the servers. See Figure 1 for the SAN and LAN diagram. 5

6 Figure 1. HP Universal Database solution LAN and SAN diagram The HP ProLiant DL980 G7 servers were installed with Red Hat Enterprise Linux version 6.2 x86-64 and configured as HP Serviceguard cluster nodes. Both servers were equipped with eight Intel Xeon E (2.4GHz/10-core/30MB/130W) processors, 1TB of memory, two dual port 8Gb FC HBAs, two dual port 10GbE NICs, and four internal 300GB disk drives configured as two RAID1 sets for the boot disk and the /apps directory. The HP 3PAR StoreServ storage array provided the shared SAN storage for our solution. A 3PAR management domain was set up with 2TB of storage for the solution. Two host profiles were created using the World Wide Names (WWNs) of the server s HBAs and the 3PAR controller/ports. A Serviceguard Lock LUN (quorum disk) and the Oracle Automatic Storage Management (ASM) LUNs were set up and presented to both host profiles. See Table 2 for the 3PAR LUN configuration used in this solution. Table 2. 3PAR LUN configuration LUN ID Size RAID type Description 1 256MB RAID5 Serviceguard Cluster Lock LUN 2, 3, 4, and 5 100GB RAID5 Primary Database (PROD) Data ASM LUNs 6, 7, 8, and 9 25GB RAID1 Primary Database (PROD) Log ASM LUNs 10, 11, 12, and GB RAID5 Secondary Database (TEST) Data ASM LUNs 14, 15, 16, and 17 30GB RAID1 Secondary Database (TEST) Log ASM LUNs 6

7 HP Serviceguard for Linux software was used to create the cluster and the HP Serviceguard Oracle Toolkit for Linux was used to create the three cluster packages for the solution. The ASM multi-node package was the first package created and ran on both nodes to manage the Oracle Automatic Storage Management (ASM) instances within the cluster. The primary PROD database instance failover package was then created to manage the PROD database instance in the cluster. The secondary TEST database instance failover package was created last to manage the TEST database instance in the cluster. Both the PROD and the TEST packages were configured with dependence on the ASM package and to run exclusively on a node ensuring that only one database instance will be active on a single node at any given time. The PROD package was also configured with a higher priority than the TEST package thus ensuring that Serviceguard for Linux will halt the TEST package in favor of the PROD package failover. Figure 2 shows a fully operational Serviceguard cluster with Node1 running the PROD database and Node2 running the TEST database. Figure 3 shows what happens to Node2 when Node1 fails. Figure 2. Fully operational cluster Figure 3. Results of a node 1 failure 7

8 The Oracle Grid Infrastructure 11gR2 software was installed on both DL980 servers to provide the Oracle ASM services to manage the ASM volumes for both PROD and TEST database instances. The Oracle Enterprise Database 11gR2 software was installed in two separate Oracle Homes on each DL980 server, one for the PROD database, and one for the TEST database. The database workload software was used to build the custom databases and to generate the OLTP load in order to stress the system while performing failover testing. Building the solution This section provides the steps to build the environment for the HP ProLiant DL980 Universal Database solution. This information can greatly reduce the time to plan and deploy your own large scale, highly available Oracle database solution for Red Hat Enterprise Linux environment. In this solution the build sequence follows these steps: Software and hardware components Hardware setup Install Red Hat Enterprise Linux Install Oracle Grid Infrastructure Install the Oracle Enterprise Database Install HP Serviceguard for Linux Set up the HP Serviceguard for Linux cluster Set up the HP Serviceguard for Linux ASM multinode package Set up the HP Serviceguard for Linux PROD failover package Set up the HP Serviceguard for Linux TEST failover package Software and hardware components Acquire all the software, licenses, and hardware required to build the solution. A list of the HP equipment used in this solution is provided in the Appendix I: Bill of Materials. Software Red Hat Enterprise Linux version 6 Update 2 64-bit HP Serviceguard for Linux HP Serviceguard Oracle Toolkit for Linux A Oracle Grid Infrastructure 11gR2 Oracle Enterprise Database 11gR2 ( ) Hardware Two HP ProLiant DL980 G7 servers 8x Intel Xeon E (2.4GHz/10-core/30MB/130W) processors 1TB of memory 2x HP 82Q 8Gb Dual Port PCI-e FC HBAs 2x HP NC552SFP dual port 10GbE NICs 4x internal 300GB disk drives HP 3PAR StoreServ Two HP G 1/10GbE switches configured with redundant IRF 10Gb interconnects Two HP 8Gb SN6000 FC switches Hardware setup There are several options for setting up the hardware; HP factory built, HP Services sets up equipment at the customer site, or customer builds. See Figure 4 for the LAN and SAN wiring diagram for network and fibre channel connectivity used in the solution. 8

9 Figure 4. LAN and SAN wiring diagram SAN configurations The SAN consists of two HP SN6000 8/24 FC switches and an HP 3PAR StoreServ storage array. Redundant FC paths were configured for each DL980 G7 server to provide high-availability for shared storage I/O. Two dual port 8Gb FC HBAs were installed in each server but only one port per HBA was used in this configuration. Each FC switch was configured with two single initiator (host WWNs) to target (3PAR controller-port WWNs) zones. The zones provided two single paths per server. This topology provides for complete redundancy across both servers, both FC switches, and both 3PAR controllers. See Table 3 for an overview of the FC zoning configuration. For additional information see the HP 3PAR StoreServ Storage best practices guide. Table 3. FC switch zoning FC switch Zone name Configuration 1 Node1Path1 World Wide Names (WWN): DL980-1 HBA1 Port1 3PAR Controller 1 Port1 1 Node2Path1 World Wide Names (WWN): DL980-2 HBA1 Port1 3PAR Controller 1 Port1 9

10 FC switch Zone name Configuration 2 Node1Path2 World Wide Names (WWN): DL980-1 HBA2 Port1 3PAR Controller 2 Port1 2 Node2Path2 World Wide Names (WWN): DL980-2 HBA2 Port1 3PAR Controller 2 Port1 The 3PAR Management Console was used to configure the host profiles and shared LUNs for the Serviceguard lock LUN and the ASM disks. Each host file was configured using the WWNs for their HBAs and the 3PAR controller ports. The LUNs were created and presented to both hosts. See Table 4 for the 3PAR storage configuration. Table 4. 3PAR SAN storage configuration Host profile Controller #/Port # Host WWNs LUN ID #/LUN name/raid type DL980_1 1/1 2/1 DL980_2 1/1 2/1 DL980-1 HBA1 Port1 DL980-1 HBA2 Port1 DL980-2 HBA1 Port1 DL980-2 HBA2 Port1 1/Prod_lock/256MB/RAID5 2/Prod_data_ASM0000/100GB/RAID5 3/Prod_data_ASM0001/100GB/RAID5 4/Prod_data_ASM0002/100GB/RAID5 5/Prod_data_ASM0003/100GB/RAID5 6/Prod_log_ASM0000/25GB/RAID1 7/Prod_log_ASM0001/25GB/RAID1 8/Prod_log_ASM0002/25GB/RAID1 9/Prod_log_ASM0003/25GB/RAID1 10/Test_data_ASM0000/110GB/RAID5 11/Test_data_ASM0001/110GB/RAID5 12/Test_data_ASM0002/110GB/RAID5 13/Test_data_ASM0003/110GB/RAID5 14/Test_log_ASM0000/30GB/RAID1 15/Test_log_ASM0001/30GB/RAID1 16/Test_log_ASM0002/30GB/RAID1 17/Test_log_ASM0003/30GB/RAID1 Same as above Install Red Hat Enterprise Linux Server Red Had Enterprise Linux Server 6.2 was installed using ilo remote console. The installation ISO image was mounted as a virtual drive. When the server was started it treated the ISO file as a bootable DVD and automatically started the installation process. During the installation the 3PAR LUNs were specified for multipathing which eliminated the need to set up multipath after the installation. This was possible because the zoning for the FC switches and the SAN storage was previously setup. See Appendix A: Red Hat Enterprise Linux Server 6.2 installation for steps used in this solution to install the Linux operating system. Post-installation steps After the operating system was successfully installed the following post-installation steps were performed: Stage the installation media Modify the kernel parameters and set the ulimits Create the Oracle user Install the 10GbE driver Set up NIC bonding Set up FC multipath 10

11 Best practices for setting up DL980 G7 and Red Hat for Oracle Below are generally used best practices for availability and performance on Oracle 11gR2 implementations. Recommended BIOS settings Enable/disable Hyper-Threading setting under System Options Processor Options for performance testing of your applications. Increased performance is dependent on the individual workload types. Disable Intel Virtualization technology and Intel VT-d settings under System Options Processor Options. Select Maximum Performance setting under Power Management Options HP Power Profile Select No Package State setting under Power Management Options Advanced Power Management Options Minimum Processor Idle Power Core State. This prevents processors from powering down components when idle. Recommended hardware settings Distribute FC HBA and 10GbE NIC cards evenly across both I/O cages using the x8 designated PCI-x slots I/O slot 1 is a first generation PCI-x slot and should not be used for any FC HBA cards Install DIMMs evenly across all memory banks for optimum memory interleaving performance Red Hat kernel parameters Set the kernel parameters as recommended in the installation manual for Oracle Grid Infrastructure and Enterprise database. Install Oracle GRID Infrastructure Oracle Automatic Storage Management (ASM) 11gR2 is now part of Oracle Grid Infrastructure 11gR2. ASM provides volume and file system management for Oracle databases. A single ASM instance supports one or more database instances. ASM is organized into logical disk groups, which is a collection of ASM disks. The database files are evenly striped across all the ASM disks presented to the disk group for performance. Oracle ASM disk groups can be configured using normal or external redundancy to determine how the data will be striped across ASM disks within a disk group. Normal redundancy will stripe and mirror everything (SAME) to protect against a single disk loss and is typically used for storage without hardware RAID capabilities. External redundancy will stripe data across the ASM disks and is typically used for storage arrays that provide their own hardware RAID capabilities. Oracle ASM operates in an instance configuration much the same as a database instance does. For more information regarding Oracle ASM, see the Oracle 11gR2 Database Concepts Guide. ASM configuration HP 3PAR storage has its own hardware RAID capabilities and ASM disk groups were configured with external redundancy. It is a best practice to create an ASM disk group with at least four ASM disks to improve I/O performance. For additional information please consult the Oracle Automatic Storage Management Administrator s Guide. In this solution four ASM disk groups were created using four ASM disks each. Two ASM disk groups for the PROD and the TEST database instances. Each database instance included two ASM disk groups one for data and the other for log files. See Appendix B: Oracle GRID Infrastructure 11gR2 installation for steps used in this solution to install Oracle Grid 11gR2. Install Oracle Enterprise Database Oracle Enterprise Database Edition 11gR2 ( ) is the minimum supported version for Linux 6 and above. Install the Oracle Enterprise Database Edition software twice on each server creating ORACLE_HOMEs for the primary database PROD and the secondary database TEST. See Appendix C: Oracle Enterprise Database Edition 11gR2 installation for steps used in this solution to install the Oracle databases. Install HP Serviceguard for Linux This section describes the process for installing HP Serviceguard for Linux and the HP Serviceguard Toolkit for Oracle databases used in this solution. Before installing HP Serviceguard for Linux one must be have read and fully understand the HP Serviceguard for Linux Version A Deployment guide. See Appendix D: HP Serviceguard for Linux A installation for steps used in this solution to install the HP Serviceguard for Linux and the HP Serviceguard Oracle Toolkit. Pre-installation steps Prior to installing Serviceguard for Linux make sure that the following tasks have been completed: Networks defined JDK 7 installed per recommendation for HP Serviceguard Manager for Linux Supported Linux packages installed 11

12 Networks defined Prior to configuring the Serviceguard cluster the networks should be defined. See Table 5 for the Serviceguard network configuration used in this solution. Table 5. Serviceguard network configuration Node IP address Type Description DL Static Public network for client access DL Static Private network for Serviceguard cluster communications DL Static Public network for client access DL Static Private network for Serviceguard cluster communications Any Virtual Serviceguard for Linux floating IP address for the PROD Database package Any Virtual Serviceguard for Linux floating IP address for the TEST Database package Install the required Linux packages on both servers Serviceguard for Linux depends on the following package: xinetd Serviceguard for Linux SNMP subagent requires the following packages: lm_sensors net-snmp Serviceguard Manager for Linux requires the following package: libxp Serviceguard CIM provider requires the following package: tog-pegasus To verify if a package is installed run the following command: # rpm qa fgrep <package> If not installed, locate the package on the DVD under the PACKAGE directory and install it: # rpm ivh <package><version>.rpm 12

13 Set up HP Serviceguard for Linux cluster After the HP Serviceguard for Linux and the HP Serviceguard Oracle Toolkit have been successfully installed the next step is to set up the cluster. Two options are available to create the cluster; Serviceguard for Linux command line interface (CLI) or the Serviceguard for Linux Manager a graphical user interface (GUI). See Appendix E: HP Serviceguard for Linux cluster setup for steps used in this solution to set up the Serviceguard for Linux cluster. In this solution the following items were specified during the setup of the cluster: Cluster name: Cluster nodes: Prod_cluster Subnet: Type: Subnet Configuration: dl980-1, dl980-2 Heartbeat Node Network Address Dl980-1 bond Dl980-2 bond Cluster Lock Type Lock LUN Path Lock LUN DL980-1 /dev/mapper/mpathcp1, DL980-2 /dev/mapper/mpathcp1 Set up HP Serviceguard for Linux ASM multinode package Serviceguard for Linux multinode packages are designed to run on one or more nodes at a time and do not failover. They simply start or stop the application on the node or the cluster. The ASM instances fit this model perfectly and were configured using the Serviceguard Oracle Toolkit for Linux multinode script to build the configuration file for the ASM packages. The ASM instances were configured to startup without mounting any disk groups. The ASM multinode package will be set up to run on both nodes and manage all the disk groups. When a database package is started or halted it will mount or dismount the ASM disk groups associated with that particular database instance. See Appendix F: HP Serviceguard for Linux ASM package setup for steps used in this solution to building the ASM multinode package. Set up HP Serviceguard for Linux PROD failover package Serviceguard for Linux failover packages are designed to run on one node at a time and when a node failure occurs the package is moved over to a surviving node within the cluster. The PROD package configuration file was created using the Serviceguard Oracle Toolkit for Linux. This failover package will need to be customized in order to monitor and manage the PROD database instance. The PROD package was configured to have a dependency on the ASM instance, run exclusively to ensure that only one database instance can run on a single node at a given time, and have a higher priority than the TEST database package to ensure that Serviceguard for Linux will shut down the TEST instance prior to starting the PROD instance in the event of a failover. See Appendix G: HP Serviceguard for Linux PROD package setup for steps used in this solution to building the PROD failover package. Set up HP Serviceguard for Linux TEST failover package The TEST package configuration file was created using the Serviceguard Oracle Toolkit for Linux. This failover package will need to be customized in order to monitor and manage the TEST database instance. The TEST package was configured to have a dependency on the ASM instance, run exclusively to ensure that only one database instance can run on a single node at a given time, and have a lower priority then the PROD database package to ensure that Serviceguard for Linux will shut down the TEST instance prior to starting the PROD instance in the event of a failover. See Appendix H: HP Serviceguard for Linux TEST package setup for steps used in this solution to building the TEST failover package. 13

14 High-Availability testing Test description Our testing of the HP ProLiant DL980 Universal Database Solution focused on the downtime experienced by the database during a failover. Hours of testing were conducted while certain failure scenarios were administered to get an indication of the different failover times; tests were also conducted when the database was in an idle and loaded state. After each failover test the workload was restarted to verify that the database instance properly failed over to the other node. The following failure scenarios were tested: Halting the active node using Serviceguard Manager for Linux halt node command Soft reboot of the active node using the Linux reboot command Hard Reset of the active node using the ilo system reset command The following database states were also tested with each failover scenario: Active node database idle/standby node only ASM running Active node database running a workload/standby node only ASM running Active node database running a workload/standby node with secondary database idle Active node database running a workload/standby node with secondary database running a workload Database and workload defined The database workload software was used to build the databases and to generate a workload to stress the systems for the failover testing. In our solution we configured the lab software in a client-server mode with the server side components installed on DL980-1 and the client side components installed on a designated client load generator server. With the PROD database running we rebuilt PROD with a 100GB OLTP database separating the data files and the logs using the PROD_DATA and PROD_LOG ASM disk groups. The PROD database was shut down and the TEST database was started before rebuilding the TEST database with the same parameters. The workload generated 1000 OLTP users for a duration of 10 minutes. This could have easily been 5000 OLTP users for a longer time but a shorter test was much more efficient and had similar results. There was very little tuning since our focus was on the database failover. The only turning was to accommodate the large number of users needed to generate a substantial workload to test failover scenarios of an Oracle database instance with Serviceguard for Linux. The following system information was captured during the 1000 OLTP user workload using SAR and IOSTAT. The average CPU utilization was around 60% during the run; 14% for system and 45% for user. The workload was fairly even across all 80 cores. The memory consumed grew from 77GB and leveled off after 5 minutes to 190GB. Figure 5. CPU utilization and memory consumed 14

15 The network utilization was heavy for the public network with writes averaging 4.2MB/s and reads averaging 1.3MB/s. The private network utilization was very low with read and writes averaging around 190B/s. Figure 6. Private and public networks The I/O for the data disk group averaged 156MB/s for writes and 48MB/s for reads. The log disk group averaged 19MB/s for writes and 6MB/s for reads. Figure 7. Data disk and log disk groups Test results All the tests have been verified to protect the Oracle ASM instance and the Oracle database before, during, and after a failover. Some of the specific recommendations that are a result of the extensive availability testing are: The FC SAN environment should be configured by zoning a single initiator to a single target. The udev rules file needs to be created since ASMLib is not available for Linux 6. The ASM PFILE needs to be created and move to the ASM $ORACLE_HOME/dbs directory and it should be configured to not mount any disk groups. The Private network used for cluster communication utilizes less than 0.001% of the available 10GbE bandwidth. A redundant pair of 1GbE links could fully support the Private network at a lower cost. See Table 6 for a list of all the failover tests performed and their results. Outage results or downtime will vary depending on database size and recovery scenarios. Table 6. Failover test results Active node Action performed Primary DB status Standby node/ secondary DB status Outage results mm:ss Comments Node Halted Primary Database Idle ASM only 01:00 Serviceguard Manager for Linux was used to halt the active node Node Halted Primary Database Idle Secondary Database idle 01:18 Additional time for shutting down the 2nd Database 15

16 Active node Action performed Primary DB status Standby node/ secondary DB status Outage results mm:ss Comments Node Halted 1K user workload ASM only 02:39 Additional time for database recovery Node Halted 1K user workload Secondary Database idle 03:07 Additional time for shutting down the 2nd Database Node Halted Operating System Soft Reboot Operating System Soft Reboot 1K user workload Primary Database Idle 1K user workload 1K user workload 03:14 Additional time for shutting down the 2nd Database during an active load ASM only 01:01 Operating System soft reboot command ASM only 02:21 Additional time for database recovery Operating System Soft Reboot 1K user workload Secondary Database idle 02:13 Additional time for shutting down the 2nd Database Operating System Soft Reboot Server Hard Reset Server Hard Reset 1K user workload Primary Database Idle 1K user workload 1K user workload 03:05 Additional time for shutting down the 2nd Database during an active load ASM only 01:12 Server hard reset issued through ilo ASM only 02:13 Additional time for database recovery Server Hard Reset 1K user workload Secondary Database idle 02:51 Additional time for shutting down the 2nd Database Server Hard Reset 1K user workload 1K user workload 02:44 Database recovery time will vary Conclusion This HP ProLiant DL980 Universal Database Solution is an important part of the overall HP large-scale and highly-available reference architecture portfolio. Developed to provide high performance for I/O intensive transactional databases and compute intensive Decision Support Systems. This delivers business continuity for heavy loads, faster user response times, and increased throughput over traditional configurations. This solution delivers this at less than half the acquisition cost, takes up less data center footprint, and consumes one-quarter the power and cooling when compared to configurations delivering similar performance. Key success factors in our extensive testing include: Successfully set up a high-availability configuration for an Oracle database environment using HP Serviceguard for Linux, HP DL980 G7 servers, HP 3PAR StoreServ storage, and HP LAN and SAN switches Defined the proper setup and validation procedures Conducted failover testing and recorded the outage time for the database Determined business continuance after each test The HP ProLiant DL980 Universal Database Solution defined in this document was based on the HP ProLiant DL980 G7 server, HP 3PAR StoreServ storage array, HP Serviceguard for Linux, Red Hat Enterprise Linux, and Oracle Enterprise Database. Steps for building the solution were also included to reduce the time to deploy a similar configuration. The HP ProLiant DL980 Universal Database Solution can also be flexible, supporting different operating systems, storage arrays, and databases. This document can be used as a steering guide to assist in creating a configuration much like the one constructed by HP s Oracle engineering team to evaluate and validate this solution. 16

17 Appendix A: Red Hat Enterprise Linux Server 6.2 installation Install Red Hat Enterprise Linux Server 6.2 Red Had Enterprise Linux Server 6.2 was installed using ilo remote console. The installation ISO image was mounted as a virtual drive. When the server was started it treated the ISO file as a bootable DVD and automatically started the installation process. During the installation the 3PAR LUNs were specified for multipathing which eliminated the need to set up multipath after the installation. This was possible because the zoning for the FC switches and the SAN storage was previously set up. In the final installation steps the following server components were specified: Base system Compatibility Libraries Networking Tools Servers System admin tools Web services Web server Web servlet engine Desktop Desktop Graphical admin tools X Windows system Development Additional development Development tools Post-installation steps After the operating system was successfully installed the following post installation steps were performed: Stage the installation media Modify the kernel parameters and set the ulimits Create the Oracle user Install the 10GbE driver Set up NIC bonding Set up FC multipath Download and stage the installation media Both servers 10GbE device driver Java Development Kit (JDK) 7 Oracle Grid Infrastructure 11gR2 Oracle Enterprise Database 11gR2 ( ) Primary server HP Serviceguard for Linux HP Serviceguard Oracle Toolkit for Linux A

18 Modify the kernel parameters and set the ulimits Edit the sysctl.conf file to support up to 5000 user connections. # vi /etc/sysctl.conf kernel.shmmni = 4096 kernel.msgmni = 64 kernel.sem = net.ipv4.ip_local_port_range = net.core.rmem_default = net.core.rmem_max = net.core.wmem_default = net.core.wmem_max = fs.file-max = fs.aio-max-nr = Edit the rc.local file and add the following command to retain the settings after a system restart. # vi /etc/rc.local sysctl p Edit the limits.conf file to set the user limits. # vi /etc/security/limits.conf * hard nofile * soft nofile 4096 * hard nproc * soft nproc 2047 Edit the 90-nproc.conf file to increase the maximum number of nproc. # vi /etc/security/limit.d/90-nproc.conf * soft nproc 8191 Create the Oracle user The Oracle user is the owner of the ASM, PROD, and TEST instances and the /apps file system. # groupadd -g 600 dba # useradd -u 601 -g dba -m oracle # passwd oracle # chown R oracle:dba /apps Install 10GbE device driver Red Hat Enterprise Linux Server 6.2 operating system did not recognize the 10GbE NIC hardware and device drivers were not installed during the initial installation. Download the HP 10GbE driver for Linux on both systems and read the installation instructions before attempting to install the device driver. Setup NIC bonding NIC bonding is defined as grouping two or more network cards to form a single connection to achieve link redundancy for network high-availability. The public and private networks were configured with NIC bonding utilizing 10GbE links in an active-passive mode. The public network was set up for client access and the private network was set up for cluster communications. Each DL980 G7 server came standard with four 1GbE embedded network interfaces eth0 through eth3. Two dual port 10GbE network cards were installed and provided interfaces for eth4 and eth5 for one NIC and eth6 and eth7 for the other. Create the NIC bonding configuration files for the private network ( ) and the public network ( ) on both servers. When using dual-port network cards, NIC bonding should combine ports from different NICs to remove a single point of failure. It is recommended to make backup copies before modifying the network interfaces for eth4 through eth7 to utilize the NIC bonding devices. 18

19 Server1 For the private network: # vi /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE="bond0" IPADDR=" " NETMASK=" " NETWORK=" " BROADCAST=" " ONBOOT="yes" BOOTPROTO="none" USERCTL="no" BONDING_OPTS="miimon=100 mode=1" For the public network: # vi /etc/sysconfig/network-scripts/ifcfg-bond1 DEVICE="bond1" IPADDR=" " NETMASK=" " NETWORK=" " BROADCAST=" " ONBOOT="yes" BOOTPROTO="none" USERCTL="no" BONDING_OPTS="miimon=100 mode=1" Server2 Identical to the private network for Server1 except for the IP address: IPADDR=" " Identical to the public network for Server1 except for the IP address: Both servers IPADDR=" " Modify the network config files. The HWADDR or MAC addresses are uniquely assigned for each interface: # vi /etc/sysconfig/network-scripts/ifcfg-eth4 DEVICE="eth4" USERCTL="no" ONBOOT="yes" MASTER="bond0" SLAVE="yes" BOOTPROTO="none" # vi /etc/sysconfig/network-scripts/ifcfg-eth5 DEVICE="eth5" USERCTL="no" ONBOOT="yes" MASTER="bond1" SLAVE="yes" BOOTPROTO="none" # vi /etc/sysconfig/network-scripts/ifcfg-eth6 DEVICE="eth6" USERCTL="no" ONBOOT="yes" MASTER="bond0" SLAVE="yes" BOOTPROTO="none" # vi /etc/sysconfig/network-scripts/ifcfg-eth7 DEVICE="eth7" USERCTL="no" ONBOOT="yes" 19

20 MASTER="bond1" SLAVE="yes" BOOTPROTO="none" Create the bonding conf file to map network device driver to network configuration file: # vi /etc/modprobe.d/bonding.conf alias eth0 netxen_nic alias eth4 be2net alias eth5 be2net alias eth6 be2net alias eth7 be2net alias bond0 bonding alias bond1 bonding After making all the necessary modifications reboot the systems and verify the network bonding driver with the following commands: # cat /proc/net/bonding/bond0 # cat /proc/net/bonding/bond1 Set up FC multipath Device Mapper configuration Device Mapper is a key component for a high-availability SAN configuration. Device Mapper Multipath enables a server to route disk I/O over multiple FC paths to provide redundant links to the shared SAN storage. Device Mapper runs a service called multipathd and is responsible for configuring and managing the devices by specifying a single multipath device to perform link redundancy. By default, the disk I/Os are also load balanced across both paths to improve bandwidth. The infrastructure initially was provided with a base installation of Red Hat 6.2. The solution requires several Linux server components to be installed. Instead of installing the optional server components manually it would be more efficient to re-install the operating system at this time. Prior to the re-install, the WWNs (Worldwide Names) for the FC HBAs were identified and the FC switch zoning and 3PAR storage was configured. This provided a way to select the SAN storage and set up multipathing during the re-installation phase. See Table 7 for the device mapper configuration used in this solution. For manually configuring Multipath, please refer to the Red Hat Enterprise Linux 6 DM Multipath configuration guide. Table 7. Device Mapper configuration Device Mapper name Multipath disk files Description /dev/mapper/mapthc /dev/mapper/mpathe /dev/mapper/mpathf /dev/mapper/mpathg /dev/mapper/mpathh /dev/mapper/mpathi /dev/mapper/mpathj /dev/mapper/mpathk sdc sdd sdg sdh sdi sdj sdk sdl sdn sdm sdo sdp sdq sdr sds sdt Serviceguard Lock Disk 256MB / RAID1 PROD_DATA_ASM GB / RAID 5 PROD_DATA_ASM GB / RAID 5 PROD_DATA_ASM GB / RAID 5 PROD_DATA_ASM GB / RAID 5 PROD_LOG_ASM GB / RAID 1 PROD_LOG_ASM GB / RAID 1 PROD_LOG_ASM GB / RAID 1 20

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