4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 09001: Available VTOC DSCB Shortage

09001: Available VTOC DSCB Shortage

FILE:             VOA Volume Allocation File
SAS FILE NAME:    DETAIL.VCAVOA01
SOURCE LOCATION:  prefix.MICS.USER.SOURCE(DYVCAEXC)

SEVERITY:         Impacting     (SEVERITY='I')
MANAGEMENT AREA:  Availability  (MGMTAREA='AVAILABILITY')

PURPOSE:  Identifies when the volume's VTOC is short on
available Format 0 DSCBs.

RATIONALE:  It is important that there be a sufficient
number of available DSCBs in the VTOC so that new data sets
can be allocated and old data sets can be extended.

DEFINITION:  This exception is detected when the count of
available DSCBs (VOADSCB0) drops below the specified minimum.

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:

/*---------------------------------------------------------*/
/*                                                         */
/*  09001                                                  */
/*  AVAILABLE VTOC SPACE SHORTAGE                          */
/*                                                         */
/*---------------------------------------------------------*/
IF VOADSCB0 LT #dscb0
THEN DO;
  EXCCODE='09001'; SEVERITY='I'; MGMTAREA='AVAILABILITY';
  EXCDESC1='AVAILABLE VTOC DSCB SHORTAGE';
  EXCDESC2='AVAILABLE DSCB COUNT=' || PUT(VOADSCB0,3.) ||
           ', VOL=' || VOLSER;
  LINK HIT;
END;

THRESHOLD MODIFICATION:  The user should modify the #dscb0
value according to the following conventions:

    #dscb0 - The minimum acceptable count of available Format
         0 DSCBs.  A minimum count of 25 available Format 0
         DSCBs would appear as :

         VOADSCB0 LT 25