Oracle internals, debugging and undocumented features

Oracle Patch Set and new patching strategy

Once again Oracle changed patching strategy.

Starting with the patch set, Oracle Database patch sets are full installations of the Oracle Database software. This means that you do not need to install Oracle Database 11g Release 2 ( before installing Oracle Database 11g Release 2 (

Note the following changes with the new patch set packaging:

  • New installations consist of installing the most recent patch set, rather than installing a base release and then upgrading to a patch release.
  • Direct upgrades from previous releases to the most recent patch set are supported.
  • Out-of-place patch set upgrades recommended, in which you install the patch set into a new, separate Oracle home. In-place upgrades are supported, but not recommended.

For detail information read :

Important Changes to Oracle Database Patch Sets Starting With [ID 1189783.1]  patch number is   10098816

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