4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 06038: Exclusive Cntl Latch Conflict Rate Exceeds Limit

06038: Exclusive Cntl Latch Conflict Rate Exceeds Limit

    FILE:            IMS System Activity
    SAS FILE NAME:   DETAIL.IMSISY01
    SOURCE LOCATION: sharedprefix.MICS.SOURCE(DYIMSEXC)

    SEVERITY:        Warning       (SEVERITY='W')
    MANAGEMENT AREA: Performance   (MGMTAREA='PERFORMANCE')

    PURPOSE:  Identifies that latch processing may be over-
committed.

    RATIONALE:  An abnormally high number here may represent
resource over-utilization.  This value may indicate misuse of
program isolation.  Latches are required to serialize access
to PI enqueue/dequeue control blocks and queues.  There is
little remedy for this situation other than reducing the
number of PSTs or decreasing the time required for processing
via hardware changes.  Only large values should be of
concern.

    DEFINITION:  This exception is detected when the
exclusive control latch conflict rate exceeds the
installation-defined limit.

    EXCEPTION STATEMENTS:  The SAS statements identifying the
exception situation and describing the condition are stored
in the source member named in SOURCE LOCATION and are
described below:

*
**  06038
**  EXCLUSIVE CONTROL LATCH CONFLICT RATE EXCEEDS LIMIT
*;
IF ISYPSLEC > exclusive-control-latch-conflict-rate
 THEN DO;
  EXCCODE='06038'; SEVERITY='W'; MGMTAREA='PERFORMANCE';
  EXCDESC1=
  'EXCLUSIVE CONTROL LATCH CONFLICT RATE EXCEEDS LIMIT';
  EXCDESC2='EXCL CTL LATCH CONFLICT RATE ='
           || PUT(ISYPSLEC,7.2);
  LINK HIT;
END;

    THRESHOLD MODIFICATION:  Modify the value used for the
exclusive-control-latch-conflict-rate.