Pluggable Databases : What they will break and why you should use them anyway!

Transcription

1 Pluggable Databases : What they will break and why you should use them anyway! Tim Hall Oracle ACE Director Oracle ACE of the Year 2006 OakTable Network OCP DBA (7, 8, 8i, 9i, 10g, 11g) OCP Advanced PL/SQL Developer Oracle Database: SQL CerTfied Expert hwp://oracle- base.com Books Oracle PL/SQL Tuning Oracle Job Scheduling

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4 Agenda What is a pluggable database? What they will break! Why you should use them anyway!

5 What is a pluggable database?

6 What is a Pluggable Database

7 Create a new PDB

8 Unplug/Plugin PDB

9 Clone a PDB

10 Clone a Remote PDB

11 What they will break!

12 Break? What do I mean by, What they will break? The way you did things in the past no long works! There will be an alternatve soluton, so it's not really broken. You will have to change! What I m not talking about. Changes that affect both CDBs and non- CDBs. Oracle 12c is very different. There is a lot to learn!

13 OS AuthenTcaTon OS authentcaton doesn't work. Must connect using services, even when connectng to Those CRON jobs you use are probably broken! What can we do about this?

14 OS AuthenTcaTon ALTER SESSION SET CONTAINER For SYS connectons, you can use the ALTER SESSION SET CONTAINER command. sqlplus / as sysdba <<EOF ALTER SESSION SET CONTAINER = pdb1; -- Do something. EXIT; EOF

15 OS AuthenTcaTon TWO_TASK For non- SYS connectons that include a password, you can use TWO_TASK. export TWO_TASK=pdb1 sqlplus test/test <<EOF -- Do something. EXIT; EOF

16 OS AuthenTcaTon Secure External Password Store Specify wallet locaton in "$ORACLE_HOME/network/admin/sqlnet.ora" file. WALLET_LOCATION = (SOURCE = (METHOD = FILE) (METHOD_DATA = (DIRECTORY = /u01/app/oracle/wallet) ) ) SQLNET.WALLET_OVERRIDE = TRUE SSL_CLIENT_AUTHENTICATION = FALSE SSL_VERSION = 0

17 OS AuthenTcaTon Secure External Password Store Create the wallet. $ mkdir -p /u01/app/oracle/wallet $ orapki wallet create -wallet "/u01/app/oracle/wallet" - pwd "mypassword" -auto_login_local Oracle Secret Store Tool : Version Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved. Enter password: Enter password again: $

18 OS AuthenTcaTon Secure External Password Store Set the credentals. $ mkstore -wrl "/u01/app/oracle/wallet" -createcredential pdb1_test test test Oracle Secret Store Tool : Version Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved. Enter wallet password Create credential oracle.security.client.connect_string1 $

19 OS AuthenTcaTon Secure External Password Store Add an entry into the "$ORACLE_HOME/network/admin/tnsnames.ora" file. PDB1_TEST = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = ol6-121) (PORT = 1521) ) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = pdb1) ) )

20 OS AuthenTcaTon Secure External Password Store Now you can connect without the password. sqlplus <<EOF -- Do something. EXIT; EOF

21 OS AuthenTcaTon DBMS_SCHEDULER - Script Jobs New jobs in 12c EXTERNAL_SCRIPT : Commands in file or PL/SQL variable run in shell. SQL_SCRIPT : Commands in file or PL/SQL variable run using SQL*Plus from shell. BACKUP_SCRIPT : Commands in file or PL/SQL variable run using RMAN from shell. Variants of external jobs. All jobs use credentals to connect to the proper OS and database users. CredenTals held in the database.

22 Running $ORACLE_HOME/rdbms/admin built- in scripts Built- in functonality open requires scripts to be run in CDB and all PDBs. Example of installing "catblock.sql". $ cd $ORACLE_HOME/rdbms/admin/ $ perl catcon.pl -d $ORACLE_HOME/rdbms/admin -b / tmp/catblock_output catblock.sql $ ls /tmp/catblock_output* catblock_output0.log catblock_output1.log catblock_output2.log catblock_output3.log $

23 catcon.pl (contnued) Can use catcon.pl to run a query in all PDBs. $ cd $ORACLE_HOME/rdbms/admin/ $ perl catcon.pl -e -b /tmp/query_output -- --x"select SYS_CONTEXT('USERENV', 'CON_NAME') FROM dual $ ls /tmp/query_output* /tmp/query_output0.log /tmp/query_output1.log /tmp/ query_output2.log /tmp/query_output3.log $ Use "- c" flag for include list or "- C" for exclude list. $ rm -f /tmp/select_output* $ cd $ORACLE_HOME/rdbms/admin/ $ perl catcon.pl -e -C 'CDB$ROOT PDB$SEED' -b /tmp/select_output -- --x"select SYS_CONTEXT('USERENV', 'CON_NAME') FROM dual $

24 Redo and Undo Management Undo and Redo belong to the CDB. PDBs have no direct control over Undo and Redo. Remember to perform maintenance of these at the CDB level. ConsolidaTng multple redo- intensive PDBs into one CDB may be unwise. Shared undo means undo- based flashback operatons may be affected if undo is not sized properly. Consider Flashback Data Archive (FDA).

25 Backup and Recovery Backup/Recovery of CDB is similar to non- CDB, but affects all PDBs. Backup/Recovery of PDBs is available. PITR of a PDB possible, similar to tablespace PITR. Does PITR of CDB to in auxiliary instance. If you do PITR of a PDB, you can't flashback the CDB before that Tme. You will have to relearn B&R, especially caveats.

26 Flashback Database You can't use FLASHBACK DATABASE for a PDB. FLASHBACK DATABASE only works with CDB. If you do PITR of a PDB, you can't flashback the CDB before that Tme. Flashback of a PDB may be coming!

27 ApplicaTon Express (APEX) By default APEX installatons are split between the CDB and PDB. CDB holds common components. PDB holds database- specific components and applicaton metadata. All APEX installatons must be maintained at the same version. Once a PDB is present, you *can't* remove shared APEX installaton. Must remove it first, then build PDBs with separate APEX installatons.

28 Transparent Data EncrypTon (TDE) The key management has changed in 12c, which affects TDE. ADMINISTER KEY MANAGEMENT replaces the ALTER SYSTEM SET ENCRYPTION KEY and ALTER SYSTEM SET ENCRYPTION WALLET commands. Under multtenant, some operatons have to be performed at CDB before PDB. You need to relearn it!

29 DBA_% and DBA_%_AE Views This: DBA_% ALL_% USER_% Has become this: CDB_% DBA_% ALL_% USER_%

30 Features Not Available With MulTtenant Not currently supported under multtenant in DBVERIFY Data Recovery Advisor Flashback Pluggable Database Flashback TransacTon Backout Database Change NoTficaTon ConTnuous Query NoTficaTon (CQN) Client Side Cache Heat map AutomaTc Data OpTmizaTon Oracle Streams If you need them, use non- CDB architecture.

31 Why you should use pluggable databases anyway!

32 Non- CDB Deprecated From the non- CDB architecture is deprecated. "The non- CDB architecture is deprecated in Oracle Database 12c, and may be desupported and unavailable in a later Oracle Database release. Oracle recommends use of the CDB architecture. hwps://docs.oracle.com/database/121/upgrd/deprecated.htm#babdbcji

33 Lone- PDB is free! A CDB with a single PDB (Lone- PDB, Single Tenant) is free and available in all editons. You can have multple CDBs on a server, each with one PDB. A CDB with multple PDBs costs $. Lone- PDB allows you to get used to MulTtenant at no extra cost.

34 Patching, Upgrading and Cloning "PotenTal" improvements in the speed of patching and upgrades. Transfers using Unplug/Plugin are simple. Cloning a PDB between local and remote CDBs is awesome. (Hot- Cloning coming?) CREATE PLUGGABLE DATABASE pdb5 FROM remote_pdb5@remotecdb1 FILE_NAME_CONVERT=( '/u01/app/oracle/oradata/cdb1/remote_pdb5/', '/u01/app/oracle/oradata/cdb1/pdb5/ ); ALTER PLUGGABLE DATABASE pdb5 OPEN READ WRITE;

35 Get Started Now! Release Schedule of Current Database Releases (Doc ID ) 12.2?

36 Get Started Now! MulTtenant introduces a lot of changes for DBAs. If you upgrade to non- CDB in 12.1, you may be forced to change to CDB in That makes 12.2 a big upgrade. Put the effort in now!

37 Future- Proof Yourself This is the future of the Oracle Database. Lots of the old- guard DBAs will be in denial and struggle to get up to speed. Make yourself stand out!

38 The End Slides and Demos: hwp://oracle- base.com/workshops QuesTons?