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Database upgrade 11.2.0.3

Hi,

This is my first blog. And wanted to share when we got request to upgrade oracle database 10.2.0.3 to 11.2.0.3 database. First thing to notice is we cann’t directy upgrade to 11.2.0.3 because we had 10.2.0.3 database underlying.

So 11.2.0.3 cann’t run 10.2.0.3 database because of some bugs. So our upgradation setps involved

1) Upgrade 10.2.0.3 CRS to 10.2.0.5

2) Upgrade 10.2.0.3 db to 10.2.0.5

3) Upgrade 10.2.0.5 CRS to 11.2.0.3

4) Upgrade 10.2.0.5 db to 11.2.0.3

 

This is the strategy we proposed to client.

 

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