DBA Tutorial Kai Voigt Senior MySQL Instructor Sun Microsystems Santa Clara, April 12, 2010
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1 DBA Tutorial Kai Voigt Senior MySQL Instructor Sun Microsystems Santa Clara, April 12, 2010
2 Certification Details Registration at Conference Closed Book Exams Non-Disclosure and Logo Usage Agreements 70 multiple-choice questions 90 minutes
3 MySQL Certification Study Guide
4 New DBA 5.1 Hands On Exams Online real life tasks Need to pass 5 out of 5 mandatory tasks Need to pass 5 out of 10 optional tasks
5 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
6 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
7 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
8 Client/Server Overview OS independancy C Client Library Connectors
9 Communication Protocols Windows Only: Named Pipes, Shared Memory --skip-networking Unix Sockets vs TCP/IP
10 SQL Parser & Storage Engines Two Tiers Storage Engines Independance
11 How MySQL uses Disk Space Data Directory InnoDB Table Space
12 How MySQL Uses Memory One Connection = One Thread Grant Table Buffer Key Buffer Cache Table Cache
13 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
14 Types of MySQL Distributions tar & RPM Binaries vs self-built
15 Starting and Stopping, Windows Pre-initialized Data Directory Multiple mysqld Binaries --console Option Running mysql command line client Install mysqld as a service
16 Starting and Stopping, Unix RPM: user, group, data directory Data Directory: /var/lib/mysql mysqld, mysqld_safe, mysql.server How to stop a MySQL server mysqld writes to stdout
17 Runtime MySQL Configuration my.cnf / my.ini Option File vs Command Line General Startup Options
18 Log and Status Files Problems with Logging General Log Slow Query Log Queries not using indexes
19 Loading Time Zone Tables mysql_tzinfo_to_sql script
20 Security-Related Configuration Passwords Filesystem Access
21 SQL Mode Use How to configure
22 Upgrading MySQL Manual and Release Notes Basic Procedure
23 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
24 Client Programs mysql Command Line Client mysqladmin mysqlimport mysqldump
25 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
26 Character Set Support Performance Issues Disk Usage, Disk I/O, Memory Usage CHAR vs VARCHAR
27 Break
28 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
29 Locking Concepts Read vs Write Locks Explicit vs Implicit Locks Advisory Locks Table vs Row Level Locks Deadlocks
30 Explicit Table Locking LOCK TABLE READ LOCAL Releasing Table Locks Locking multiple tables
31 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
32 MySQL Storage Engines Things to consider Default Engine Determine the storage engine Required Engines: MyISAM, Memory
33 The MyISAM Engine MERGE, FULLTEXT features LOW_PRIORITY, HIGH_PRIORITY Out of Disk Space No Deadlocks Fixed Format Compressed Format
34 The MERGE Engine Table Locking No Deadlocks
35 The InnoDB Engine Tablespace Multiversioning Deadlocks Auto-Recovery Foreign Keys Per-Table Tablespace Transactions SAVEPOINT Implicit Commits Isolation Levels
36 The MEMORY Engine General Characteristics BTREE vs HASH Indexes
37 The FEDERATED Engine Concepts of FEDERATED Engine How to define
38 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
39 SQL Statements CHECK TABLE REPAIR TABLE ANALYZE TABLE OPTIMIZE TABLE Table Statistics
40 Client and Utility Programs myisamchk mysqlcheck
41 MyISAM Auto-Repair --myisam-recover
42 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
43 INFORMATION_SCHEMA List of Tables Read-Only INFORMATION_SCHEMA vs SHOW Limitations
44 Exam Content DBA 1 MySQL Architecture (10%) Starting, Stopping, and Configuring MySQL (20%) Client Programs for DBA Work (5%) Character Set Support (5%) Locking (10%) Storage Engines (20%) Data (Table) Maintenance (10%) The INFORMATION_SCHEMA Database (5%) Data Backup and Recovery Methods (15%)
45 Introduction Recovery = Backup + Binary Log Principles of MySQL Backup Binary vs Text Backup
46 Making Binary Backups MyISAM Tables InnoDB Tables Binary Portability
47 Making Text Backups SELECT INTO OUTFILE mysqldump
48 Replication as an Aid to Backup Hot Backup How to Backup a Slave
49 Data Recovery Load mysqldump File Binary Log mysqlbinlog --start-position --stop-position
50 End of Part 1
51 DBA Tutorial Kai Voigt Senior MySQL Instructor Sun Microsystems Santa Clara, April 20, 2009
52 Certification Details Registration at Conference Closed Book Exams Non-Disclosure and Logo Usage Agreements 70 multiple-choice questions 90 minutes
53 MySQL Certification Study Guide
54 New DBA 5.1 Hands On Exams Online real life tasks Need to pass 5 out of 5 mandatory tasks Need to pass 5 out of 10 optional tasks
55 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
56 Stored Procedures DEFINER/INVOKER Check incoming Data Restrict incoming Data Reduce Amount of Data Exchange
57 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
58 User Account Management Username + Hostname Wildcards Grant Tables in mysql Database Global, Database, Table, Column, Routine Level ALL PRIVILEGES USAGE Privilege Grants Cache GRANT/REVOKE CREATE/DROP USER IDENTIFIED BY WITH GRANT OPTION SHOW GRANTS SET PASSWORD
59 Client Access Control Two Stages Wildcards Hostnames, then Usernames
60 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
61 Filesystem Security Don t run mysql as root Log Files should be kept secret
62 Network Security MySQL user names!= OS user names mysql_secure_installation Script mysql Database FILE Privilege SHOW PROCESSLIST SUPER Privilege --skip-networking --bind-address
63 FEDERATED Table Security Connect String Storage Prevent Users from seeing password
64 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
65 Upgrade-Related Security Issues Upgrading Privilege Tables Strict SQL Mode Error for Division by Zero Zero Dates, Null Dates
66 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
67 Identifying Candidates for Analysis Binary Log Slow Query Log SHOW PROCESSLIST
68 EXPLAIN columns: possible_keys, key, ref, id Joins: Multiply row numbers Order of Tables type: eq_ref, range, const Multi-Column Indexes STRAIGHT JOIN
69 MyISAM Index Caching Global vs Table Level Key Buffer SET, CACHE INDEX, LOAD INDEX INTO
70 Break
71 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
72 General Table Optimization PROCEDURE ANALYSE() Normalization vs Denormalization
73 MyISAM-Specific Optimizations Compressed Tables Dynamic vs Fixed Row Format Split Table into Dynamic and Fixed Parts
74 InnoDB-Specific Optimizations Size of Primary Keys SELECT COUNT(*) Group Statements into Transactions OPTIMIZE TABLE
75 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
76 Tuning Memory Parameters Table Cache Small Default Values MyISAM Key Buffer InnoDB Buffer Pool Disabling InnoDB read_buffer_size Sort Buffer Join Buffer max_allowed_packet
77 Using the Query Cache Characteristics query_cache_size query_cache_limit SHOW STATUS LIKE qcache_%
78 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
79 Diagnostics Error Log long_query_time Slow Query Log mysqldumpslow
80 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
81 Memory and Disks Memory is important Disk Seek Time is important RAID Seperate Log Files and Data Directory Using Symlinks Filesystem Selection
82 Network and OS Latency and Throughput Process Limits max_connections
83 Exam Content DBA 2 Stored Routines (5%) User Management (20%) Securing the Server (10%) Upgrade-Related Security Issues (5%) Optimizing Queries (15%) Optimizing Schemas (15%) Optimizing the Server (10%) Interpreting Error Messages (5%) Optimizing the Environment (5%) Scaling MySQL (10%)
84 Using Multiple Servers Requirements Shared InnoDB tables
85 Replication General Features Master-Slave MASTER_LOG_FILE, MASTER_LOG_POS master.info Relay Log Binary Log IO Thread, SQL Thread Unique Server IDs
86 The preceding is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle.
87 Good Luck!
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