PDBs in der Praxis Experiences Using PDBs. Ernst Leber Nürnberg 15. November 2016

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1 PDBs in der Praxis Experiences Using PDBs Ernst Leber Nürnberg 15. November 2016

2 Im Überblick Technologie-orientiert Branchen-unabhängig Hauptsitz Ratingen 240 Beschäftigte Ausbildungsbetrieb Inhabergeführte Aktiengesellschaft Gründungsjahr 1994 Niederlassung Frankfurt am Main Zertifizierter Partner von Oracle, Microsoft und SAP

3 Topics Pluggable DataBases PDBs Unplug Plug Patch System Change Number during plugging 3

4 Overview Demo Environment Determine Patch Level Patching of PDBs Behaviour of System Change Numbers SCN in CDB Tipps Links 4

5 Demo Environment 5

6 Demo Environment Server 2 Oracle Enterprise Linux OEL6 Oracle GI Oracle RDBMS Databases CDBMIG PSU APR 2015 PDB$SEED ORACLE_HOME=/u01/app/oracle/product/ /dbhome_1 CDBMIG1 ORACLE_HOME=/u01/app/oracle/product/ /dbhome_2 PSU OCT 2016 PDB$SEED 6

7 Determine Patch Level OPatch $ORACLE_HOME/OPatch/opatch lsinventory (-detail) Select from Database Version 11 select * from REGISTRY$HISTORY Version 12 select * from REGISTRY$SQLPATCH Alert-Log Listed after each DB start (EE only) 7

8 What is the Patch Level select PATCH_ID, PATCH_UID, VERSION, STATUS, DESCRIPTION from DBA_REGISTRY_SQLPATCH order by BUNDLE_SERIES; 8

9 What is the Patch Level CDBMIG: PATCH_ID PATCH_UID VERSION STATUS DESCRIPTION SUCCESS Database Patch Set Update : ( ) SUCCESS Database PSU , Oracle JavaVM Component (Apr2015) CDBMIG1: PATCH_ID PATCH_UID VERSION STATUS DESCRIPTION SUCCESS Database Patch Set Update : ( ) SUCCESS Database Patch Set Update : ( ) SUCCESS Database Patch Set Update : ( ) SUCCESS Database PSU , Oracle JavaVM Component (OCT2016) SUCCESS Database PSU , Oracle JavaVM Component (Apr2015) SUCCESS Database PSU , Oracle JavaVM Component (Apr2015) 9

10 Patching Container Databases Start Server 2 CDBMIG dbhome_1 PSU APR 2015 ASM +DATA CDBMIG1 dbhome_2 PSU OCT 2016 PDBORCL Target Configuration PDBORCL 10

11 Patching using Unplug and Plug UNPLUG from CDBMIG: ALTER PLUGGABLE DATABASE PDBORCL CLOSE IMMEDIATE; ALTER PLUGGABLE DATABASE PDBORCL UNPLUG INTO '/tmp/pdborcl.xml'; DROP PLUGGABLE DATABASE PDBORCL KEEP DATAFILES; PLUG into CDBMIG1: CREATE PLUGGABLE DATABASE PDBORCL USING '/tmp/pdborcl.xml' NOCOPY; ALTER PLUGGABLE DATABASE PDBORCL OPEN; ALTER PLUGGABLE DATABASE PDBORCL CLOSE; ALTER PLUGGABLE DATABASE PDBORCL OPEN [UPGRADE]; $ORACLE_HOME/OPatch/datapatch -verbose 11

12 Demo Showtime 12

13 PDB$SEED Read Only??? Opening pdb PDB$SEED (2) with no Resource Manager plan active :17: :00 Pluggable database PDB$SEED opened read write Completed: alter pluggable database pdb$seed OPEN READ WRITE :18: :00 ALTER SESSION DISABLE LOGICAL REPLICATION invoked from session at SCN 0x a8a6be ALTER SESSION ENABLE LOGICAL REPLICATION invoked from session at SCN 0x a8a72f alter pluggable database pdb$seed close immediate instances=all :18: :00 ALTER SYSTEM: Flushing buffer cache inst=0 container=2 local Pluggable database PDB$SEED closed Completed: alter pluggable database pdb$seed close immediate instances=all alter pluggable database pdb$seed OPEN READ ONLY instances=all Database Characterset for PDB$SEED is AL32UTF8 13

14 Rollback Patches in Container Databases Server 2 CDBMIG dbhome_1 PSU APR 2015 ASM +DATA CDBMIG1 dbhome_2 PSU OCT 2016 PDBORCL Target Configuration PDBORCL 14

15 Rollback Patching using Unplug and Plug (recommended by Oracle) UNPLUG from CDBMIG1: ALTER PLUGGABLE DATABASE PDBORCL CLOSE IMMEDIATE; ALTER PLUGGABLE DATABASE PDBORCL UNPLUG INTO '/tmp/pdborcl.xml'; DROP PLUGGABLE DATABASE PDBORCL KEEP DATAFILES; Copy Patch information from CDBMIG1 to CDBMIG But Patch Information in ORACLE_HOME that is not applied! PLUG into CDBMIG: CREATE PLUGGABLE DATABASE PDBORCL USING '/tmp/pdborcl.xml' NOCOPY; ALTER PLUGGABLE DATABASE PDBORCL OPEN; ALTER PLUGGABLE DATABASE PDBORCL CLOSE; ALTER PLUGGABLE DATABASE PDBORCL OPEN UPGRADE; Rollback the patches in PDBORCL $ORACLE_HOME/OPatch/datapatch -verbose 15

16 Rollback Patching using Unplug and Plug (tested and working) Rollback and Apply Patches: $ORACLE_HOME/OPatch/datapatch -rollback <OCT PSU> -pdbs PDBORCL -force -verbose $ORACLE_HOME/OPatch/datapatch -apply <APR PSU> -pdbs PDBORCL -force -verbose UNPLUG from CDBMIG1: ALTER PLUGGABLE DATABASE PDBORCL CLOSE IMMEDIATE; ALTER PLUGGABLE DATABASE PDBORCL UNPLUG INTO '/tmp/pdborcl.xml'; DROP PLUGGABLE DATABASE PDBORCL KEEP DATAFILES; PLUG into CDBMIG: CREATE PLUGGABLE DATABASE PDBORCL USING '/tmp/pdborcl.xml' NOCOPY; ALTER PLUGGABLE DATABASE PDBORCL OPEN; ALTER PLUGGABLE DATABASE PDBORCL CLOSE; ALTER PLUGGABLE DATABASE PDBORCL OPEN UPGRADE; $ORACLE_HOME/OPatch/datapatch -verbose 16

17 Current Patch Level CDBMIG1: opatch added and removed the following patches: For the following PDBs: CDB$ROOT PDB$SEED Nothing to roll back Nothing to apply For the following PDBs: PDBORCL The following patches will be rolled back: (Database PSU , Oracle JavaVM Component (Apr2015)) The following patches will be applied: (Database PSU , Oracle JavaVM Component (Oct2016)) (Database Patch Set Update : ( )) Prepare for CDBMIG: Removing these patches should be just the other way round: datapatch -rollback , pdbs PDBORCL -force -verbose datapatch -apply pdbs PDBORCL -force -verbose 17

18 Demo Showtime 18

19 System Change Number SCN Identifies Transaction(s) Stored in Redo-logs, Tablespace Headers etc. Unique in Database Greatest (SCN CDB, SCN plugged in PDB) 19

20 Behavior of System Change Numbers SCN in CDB Step SCN CDBMIG SCN CDBMIG1 Start UNPLUG PLUGIN PDB OPEN UNPLUG PLUGIN PDB OPEN

21 Tipps PDB$SEED Read Only??? SQL> show pdbs CON_ID CON_NAME OPEN MODE RESTRICTED PDB$SEED READ ONLY NO 3 PDBORCL READ WRITE NO SQL> alter pluggable database PDB$SEED CLOSE; alter pluggable database PDB$SEED CLOSE * ERROR at line 1: ORA-65017: seed pluggable database may not be dropped or altered SQLCL: Fehler beim Start in Zeile: 1 in Befehl - alter pluggable database PDB$SEED CLOSE Fehlerbericht - ORA-65017: Integrierbare Seed-Datenbank kann nicht gelöscht oder geändert werden "seed pluggable database may not be dropped or altered" *Cause: User attempted to drop or alter the Seed pluggable database which is not allowed. *Action: Specify a legal pluggable database name. 21

22 Links Unplug/Plug on different PSU envs on (Doc ID ) VMs für diese Demos unter: Folien und Skripte zum Vortrag 22

23 Weitere Vorträge am

24 Ernst Leber Telefon: ROADSHOW VON FORMS NACH APEX Hamburg Düsseldorf Frankfurt München