duplicate database and opatch lsinventory

  • From: John Hallas <John.Hallas@xxxxxxxxxxxxxxxxxx>
  • To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
  • Date: Thu, 9 Apr 2009 11:54:21 +0100

Duplicate database and active duplicate database in 11g  is becoming more 
common as a means of cloning an Oracle database.
However I have been thinking about how that affects patch levels and the 

A patch can have 3 effects
1) Modify a binary
2) Modify the data dictionary
3) Both

If a db duplicate script is run then a db containing a patch of type 1or 3 will 
be potentially out of sync if it has moved to a new Oracle home
The opatch lsinventory output from each binary would be different where a 
change of type 2 had been applied and yet the databases and binaries would be 

I know the answer is to have documented procedures which define the patch 
levels run against every installation but I am wondering how other people are 
managing this issue.


John Hallas
Oracle DBA
Wm Morrison Supermarkets PLC
Tel 0845 611 4589 Mob: 07876 790540
E-mail: john.hallas@xxxxxxxxxxxxxxxxxx

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