4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 02908: Percent SQA Allocated Exceeds Max

02908: Percent SQA Allocated Exceeds Max

FILE: Virtual Storage System Usage File
SAS FILE NAME: DAYS.SCPVSM01
SOURCE LOCATION: prefix.MICS.USER.SOURCE(DYRMFEXC)

SEVERITY: Impacting            (SEVERITY='I')
MANAGEMENT AREA: Performance   (MGMTAREA='PERFORMANCE')

PURPOSE:  Detect excessive System Queue Area (SQA) use.  This
exception is defined in terms of percent.  Exception 02904
may also be used to detect this condition in terms of the
absolute size of SQA allocated.

RATIONALE:  When sufficient SQA storage is not available, SQA
allocations are made in the Common Storage Area (CSA),
thereby effectively making the CSA smaller.  Excessive SQA
usage can occur either through normal workload growth or as a
result of improper SQA storage management.

DEFINITION:  This exception is detected when the percent of
SQA storage allocated exceeds an installation-defined
maximum.

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:

/* *******************************************
**  02908 PERCENT SQA ALLOCATED EXCEEDS MAX **
******************************************* */
IF VSMASQLP NE .  THEN IF VSMASQLP GT percent
 THEN DO;
  EXCCODE='02908'; SEVERITY='I'; MGMTAREA='PERFORMANCE';
  EXCDESC1='PERCENT SQA ALLOCATED EXCEEDS MAX';
  EXCDESC2='ALLOCATED=' !! PUT(VSMASQLP,4.) !! '%';
  LINK HIT;
END;

THRESHOLD MODIFICATION:  The user should modify the percent
value according to the following convention:

percent - The maximum percent of SQA allocated is specified.
An 85 percent threshold would appear as:

VSMASQLP GT 85