The Patch Service window closes and the patching operation begins. The patch process first performs a full backup before patching the database.
The Administration tile shows the starting time of the patching operation and a Patching... message replaces the Patch button.
When the patching operation completes, the Patching page shows the completion time of the patching operation, and a log of the operation’s activities appears in the Details of Last Patching Activity section. If the operation was successful, the patch is removed from the list of patches in the Available Patches. If the operation failed, the patch remains in the list. In this case, check the Details of Last Patching Activity section for information about the failure.
Note:
Patching operations are performed with a minimum of impact on the functioning of the database. However, during part of the operation the database restarts, making it inaccessible for a period of time .