Oracle Message PGA-21220 - logging error limit (number) exceeded, RRM shutting down for LU string

ERROR	logging error limit (number) exceeded, RRM shutting down for LU string
CAUSE	The limit of Oracle errors while accessing the RRMs local LU6.2 log tables has exceeded. The RRM for the local LU is shutting down.
ACTION	The DBA should examine the RRM log file to determine what action to take. The messages in the log file will show what Oracle errors have occurred, and the DBA should take whatever corrective action is required.