If it is not applicable, OPatch displays an error message.
Check for System Commands OPatch supports a set of properties used for various software operations.
For information on standalone patching and the available options for commands, see "Standalone Patching". If a conflict exists that prevents the patch from being applied, you can use this option to apply the patch.
OPatch removes all the conflicting patches before applying the current patch.
OPatch is an Oracle-supplied utility that assists you with the process of applying interim patches to Oracle's software and rolling back interim patches from Oracle's software.