How to upgrade Oracle RAC 10g to Oracle 10.2.0.5

1.Back Up Database

Rman Backup Under normal circumstances

2. Backup OCR and vote disk

[Root@rac2 bin]#./ocrconfig-export/tmp/ocr_export.bak

[Root@rac2 bin]# More/etc/oracle/ocr.loc

Ocrconfig_loc=/dev/raw/raw11

Local_only=false

[Root@rac2 bin]# DD IF=/DEV/RAW/RAW11 Of=/tmp/ocr_dd.bak

[Root@rac2 bin]# DD if=/dev/raw/raw31 Of=/tmp/vote_dd.bak

3.Update Oracle Time Zone definitions

The Actions for the DSTv4 update in the 10.2.0.5 Patchset [ID 1086400.1]

4.Stopping All Processes

Rolling upgrade closes all processes for a node, non-rolling upgrade closes all processes

$ isqlplusctl Stop

$ emctl Stop Dbconsole

$ srvctl Stop service-d db_name [-S service_name_list [-i inst_name]]

$ srvctl Stop instance-d db_name-i inst_name

$ Srvctl Stop asm-n node

$ srvctl Stop listener-n node [-l Listenername]

$ Srvctl Stop nodeapps-n node

# Crs_home/bin/crsctl Stop CRS (root execution, rolling upgrades do not need to be closed)

5.Back up the System

$ORACLE _base files, mainly including (DB and CRS installation files/orainventory files)

6. Upgrade CRS Software

Execute./runinstaller Select the CRS directory