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we are running in dataguard configuration running in linux x86_64 5 update 7.
primary database 'single instance': 10.2.4.4 (downgraded from 10.2.0.5)
standby database '2xnode RAC': 10.2.0.5 (need to downgrade)
primary database successfully downgraded after stoping redo shipping services etc..
in 10.2.0.5 patchset readme i can not find any notes which address 'how to remove/uninstall patchset only from binaries' because in dataguard we do not need to run any scripts which touches database.
thanking you in anticipation.