2.2.2 Applying a Patch on a Single Host Using OPatchAuto

After you obtain the patches required for your installation, use the opatchauto apply —analyze command to verify prerequisites, and then use opatchauto apply —instance to apply a patch on a single host. If needed, you can use opatchauto rollback to roll back the application of a patch.

Patching a single host environment with OPatchAuto involves the following tasks:

• Verifying the Prerequisites for Applying a Patch on a Single Host
  To verify that a patch can be applied on a single host, use the —analyze argument to the OPatchAuto apply command. For single host patching, you must also provide the domain location using the —instance argument.
• Applying a Patch on a Single Host Using the Apply Command
  To apply a patch on a single host, use the opatchauto apply command. This is the same command as opatchauto apply —analyze, except you remove the —analyze argument when you are ready to apply the patch.
• Rolling Back a Patch You Have Applied on a Single Host
  If you apply a patch and the results are not satisfactory, use the opatchauto rollback command to roll back the application of the patch. This is the same command as opatchauto rollback –analyze, except you remove the -analyze argument when you are ready to roll back the patch.