Message Oracle PGA-21223 - commit failed during first-time processing for partner LU string

ERRORcommit failed during first-time processing for partner LU string
CAUSEThe RRM was unable to commit updates to its local log during a first-time processing for partner LU . An Oracle Server message will follow this message, and contains information on the Oracle error.
ACTIONEnsure that the Oracle server and its TNS listener are both operational. Also ensure that the PGA_2PC_LUS table exists and has not been altered or updated manually. If the table has been tampered with, it may need to be reinitialized and the RRM cold started.