2. Oracle Database 12c Upgrade
Tools and Best Practices from Oracle Support
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Agrim Pandit
Principal Software Engineer
Oracle Software Support
September 30, 2014
Copyright © 2014, Oracle and/or its affiliates. All rights reserved. |

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4. Program Agenda 1
Why Upgrade ? Overview and Concept Upgrade Tools and Best Practices Useful References for Upgrade 2 3 4

5. Why Upgrade To 12c Release 1 ?
Benefits of upgrading the database
New Features
Useful and Desirable Features
Improve Performance
Potential Cost Saver
Easy Administration
Increase Support Length
Premier Support until July 2018
Extended Support until July 2021
Premier Support
Save Extended Support Fee
Patchset, PSU,SPU and other Bug fixes are available

6. Upgrade Vs Migration
UPGRADE
The process of changing the data dictionary contents of a database to reflect a newer release
No User or Application data will be touched or modified
Independent of the size of the database
Major Release Upgrade : Upgrading from 11.2 to 12.1
Patchset Upgrade :Upgrading from to
MIGRATION
Move to new OS ,hardware and character set conversation.
Dependent on the size of the database

7. Upgrade Methods
DBUA (Recommended)
Manual Upgrade
Expdb/Impdp

8. 12c Upgrade Path
Direct or Indirect Path

9. Upgrade Documentation

10. Upgrade Companion
MOS Note Oracle 12cR1 Upgrade Companion

11. Upgrade blog

12. OTN upgrade page

13. Certification
Database Sever and Platform certification

14. Software Download Locations https://edelivery.oracle.com

15. Install the latest Software
Reduce patching downtime:
Install the LATEST PATCHSET or BASE RELEASE
Patchset is complete installation software from Onwards
Install the Binaries in new Oracle home . Recommended: OUT OF PLACE
Apply the latest PATCH SET UPDATE for Unix and BUNDLE PATCH for Windows
The first PSU for will be released on October 2014
Apply Interim Patches for Known issue
Note : Quick Reference to Patch Numbers for Database PSU, SPU(CPU), Bundle Patches and Patchsets

16. Upgrade Grid Infrastructure
Upgrade Grid Infrastructure BEFORE upgrading the Oracle Database
Install the Grid Infrastructure in NEW Oracle home ( Out-of Place Upgrade)
Oracle Grid Infrastructure Home
Oracle Database Server Home
Note How to Upgrade to Oracle Grid Infrastructure 12c Release 1 and Known Issues

17. Pre Upgrade Checklist Source Oracle home
VALIDATE
Invalid database OBJECTS in SYS and SYSTEM schema
Invalid database COMPONENTS
SYS and SYSTEM does not have DUPLICATE OBJECTS
CLUSTER_DATABASE is set to FLASE
REMOVE
HIDDEN parameter and EVENTS
DEPRECATED parameter
OBSOLETE database COMPONENTS
RECYCLE BIN objects
CREATE
Gather Statistics
Preserve Statistics
Backup of the Database

18. New Pre-Upgrade Information Tool :preupgrd.sql
Upgrade SQL Automation
preupgrd.sql is introduced in 12c R1
It has replaced utlu<nnn>i.sql
Runs in the source Database
Generates Fix up scripts
preupgrade_fixups.sql
postupgrade_fixups.sql

19. Prepare Source database
Run Preupgrade Tool on the Source Database
Execute preupgrd.sql
Location: $ORACLE_BASE/cfgtoollogs/<SID>/preupgrade
Logs generated by preupgrd.sql
Copy preupgrd.sql &
Utluppkg.sql
Source DB
Target DB
preupgrade.log
preupgrade_fixups.sql
- postupgrade_fixups.sql

20. Preupgrade Checks Compatible Parameter Check OCM user existence check
$ORACLE_BASE/cfgtoollogs/<SID>/preupgrade/preupgrade.log
$ORACLE_BASE/cfgtoollogs/<SID>/preupgrade/preupgrade_fixups.sql
Compatible Parameter Check
OCM user existence check
Gather dictionary statistics

21. Remove Obsolete Components
Enterprise Manager Database Control Repository is superseded in 12c By EM Express
Remove EM repository
It will be automatically removed during the catuppst.sql post-upgrade phase.
$emctl stop dbcontrol
?/rdbms/admin/emremove.sql
Remove Oracle UltraSearch before doing the upgrade
Oracle UltraSearch does not exist in Oracle Database 11.2 and onwards
For Oracle Database 10.2
?/ultraserach/admin/wk0deinst.sql SYS password ‘‘ ‘‘

22. Oracle Label Security
Essential Step if Oracle Label Security and/or Database Vault was already in the database before upgrade
Execute olspreupgrde.sql in source Database
?/rdbms/admin/olspreupgrade.sql
Prepares the move of AUD$ table from SYSTEM to SYS.
Processes the audit records to minimize downtime.
Move records to an interim temporary table.

23. Time Zone Version Pre or Post Upgrade Actions
Default Time Zone Version 12c R1 is DST V18
If Time Zone version at source database HIGHER than target database
Apply the Time Zone patch on target to match the source database version
If Time Zone version at source database LOWER than target database
Time Zone conversion need to be done post upgrade.
Most Recent Time Zone version is DST V22
Time Zone definitions in $OH/oracore/zoneinfo
Note Scripts to automatically update the RDBMS DST (timezone) version in an 11gR2 or 12cR1 database

24. Backup the Database
Take a backup of the Database.
Always create a valid and complete online backup with RMAN
Test the restore and the recovery at least once.
Make sure your fallback strategy covers during and after cases

25. Compatible Parameter Compatible 11.0.0 or higher is MUST
Minimum COMPATIBLE parameter for 12c is
Leave COMPATIBLE at the original value for a week before changing to
No way back once COMPATIBLE set to
Compatible or higher is MUST
Downgrade NOT possible
Compatible remain to 11.x.x
Downgrade possible
Database restart is required to change the COMPATIBLE parameter later
SQL> alter system set compatible = '12.0.0' scope=spfile;
SQL> Shutdown immediate ;
SQL> conn / as sysdba
SQL> startup

26. Diagnostic Collection Script (dbupgdiag.sql)
Note : Script to Collect DB Upgrade/Migrate Diagnostic Information (dbupgdiag.sql)

27. New Upgrade Utility : catctl.pl
It is introduced in Oracle database server 12c R1
It loads the data dictionary and components in PARALLEL
Default Parallelism 4
Maximum Parallelism 8
catctl.pl supported options

28. 12c Upgrade Start the Database in UPGRADE mode using the 12c binaries
Exit the sqlplus

29. 12c Upgrade Parallelism
Start the upgrade on the Shell with catctl.pl with PARALLEL option .

30. 12c Upgrade Logs Default log location is current working directory
Use –l parameter to specify the log location
One log file for each thread
Upgrade is running with 8 Parallel processes
Total DB components upgrade time

31. Post Upgrade Checklist
Target Oracle home
EXECUTE
$ORACLE_HOME/rdbms/admin/utlrp.sql
$ORACLE_HOME/rdbms/admin/utlu121s.sql
UPGRADE
TIMEZONE version
CREATE
SPFILE for PFILE
Gather STATISTICS
BACKUP of the database

32. Post Upgrade Fixups TimeZone Version Check
$ORACLE_BASE/cfgtoollogs/<SID>/preupgrade/preupgrade.log
$ORACLE_BASE/cfgtoollogs/<SID>/preupgrade/postupgrade_fixups.sql
TimeZone Version Check
Gather Fixed Objects Statistics

33. Verify Upgrade Logs Review Upgrade logs and traces
DBUA logs $ORACLE_BASE /cfgtoollogs/DBUA/<SID>/upgrade<n>
If ORACLE_BASE is set
$ORACLE_BASE /cfgtoollogs/DBUA/<SID>/upgrade<n>
If ORACLE_BASE is NOT set
$ORACLE_HOME /cfgtoollogs/DBUA/<SID>/upgrade<n>
Manual upgrade logs
Location Specified using - l parameter of catctl.pl
Current working directory
Check alert_SID.log
utlu121s.sql output

34. Verify Upgrade
New successful upgrade status for CATALOG and CATPROC component
Run the utlrp.sql to change the status to VALID

35. Upgrade Status Summary Tool :utlu121s.sql

36. Useful References for Upgrade
Note Oracle 12c Upgrade Companion Note Oracle Database 12c Release 1 (12.1) Upgrade New Features Note Oracle Database 12c Release 1 (12.1) DBUA : Understanding New Changes With All New 12.1 DBUA Note Complete Checklist for Upgrading to Oracle Database 12c Release 1 (12.1) using DBUA Note Complete Checklist for Manual Upgrades to Oracle Database 12c Release 1 (12.1)
Note Oracle Database 12c Release 1 (12.1) DBUA in Silent mode