Understanding OPatch Error Code 21 In the context of Oracle database patching, OPatch error code 21 typically surfaces during the prerequisite check ) or when using the OPatchAuto
Run:
But you omitted -local (on a non-RAC environment), it might fail. opatch failed with error code 21
However, this is often a lie—or at least an oversimplification. In reality, error code 21 frequently appears as a generic wrapper for deeper problems: Understanding OPatch Error Code 21 In the context
This is the cause in 90% of cases. OPatch attempts to patch the Oracle Home, but it detects that a process is still holding a lock on the files. This usually happens because: it might fail. However