MGTCA-01284
Mgmtca applyDatapatch has failed to apply system patch on the Pluggable Databases {0}, as they are not in OPEN and READ WRITE mode.
Cause
An attempt to execute the mgmtca command failed because the specified Pluggale Databases are not in OPEN and READ WRITE mode.
Action
Retry the "mgmtca applyDatapatch -postPatchApply" operation after opening the Pluggable Databases in read write mode.