Using the MODIFY CATALOG,REPORT command, you can obtain general information about the catalog address space. This information can be used to evaluate your current catalog environment setup. If you determine your current setup is inadequate, you can change it with another MODIFY CATALOG command, or by changing the SYSCATxx member of SYS1.NUCLEUS.

IEC359I CATALOG REPORT OUTPUT         
*CAS************************************************************ 
*  CATALOG COMPONENT LEVEL   = HDZ2210                         * 
*  CATALOG ADDRESS SPACE ASN = 0014                            * 
*  SERVICE TASK UPPER LIMIT  =  180                            * 
*  SERVICE TASK LOWER LIMIT  =   60                            * 
*  HIGHEST # SERVICE TASKS   =    7                            * 
*  # ATTACHED SERVICE TASKS  =    7                            * 
*  MAXIMUM # OPEN CATALOGS   = 1,024                           * 
*  ALIAS TABLE AVAILABLE     = YES                             * 
*  ALIAS LEVELS SPECIFIED    = 1                               * 
*  SYS% TO SYS1 CONVERSION   = OFF                             * 
*  CAS MOTHER TASK           = 009AC680                        * 
*  CAS MODIFY TASK           = 009FC7E0                        * 
*  CAS ANALYSIS TASK         = 009FC380                        * 
*  CAS ALLOCATION TASK       = 009FC5B0                        * 
*  CAS ASYNC TASK            = 009FC150                        * 
*  CAS SYSPLEX COMMAND TASK  = 00994C58                        * 
*  CAS SYSPLEX QUIESCE TASK  = 00994E88                        * 
*  VOLCAT HI-LEVEL QUALIFIER = SYS1                            * 
*  NOTIFY EXTENT             =   80%                           * 
*  DEFAULT VVDS SPACE        = ( 10, 10) TRKS                  * 
*  ENABLED FEATURES          = DSNCHECK SYMREC UPDTFAIL        * 
*  DISABLED FEATURES         = DELFORCEWNG VVRCHECK            * 
*  DISABLED FEATURES         = AUTOTUNING BCSCHECK             * 
*  DISABLED FEATURES         = DELRECOVWNG EXTENDEDALIAS       * 
*  DISABLED FEATURES         = ECS AUTOADD DUMPON              * 
*  INTERCEPTS                = (NONE)                          * 
*CAS************************************************************ 

The first two entries supply information on the component level of catalog management, and the ASID for the catalog address space.

The next four entries supply information about the service tasks available to process catalog requests. In this example, you can see that the service task lower limit is adequate for the # attached service tasks. The service task upper limit defaults to 180; it is set either at system initialization by the SYSCATxx member of SYS1.NUCLEUS, the IGGCATxx parmlib member or by the the MODIFY CATALOG,TASKMAX command. The highest number of service tasks is equal to the highest value the current number of tasks field has reached.

Catalog management creates tasks as necessary, eventually causing the # attached service tasks to exceed the service task lower limit. As catalog requests subside, the number of tasks attached and available for processing requests is reduced until the lower limit is reached.

Maximum number of open catalogs is the value set by the MODIFY CATALOG,CATMAX command. This is the maximum number of catalogs that might be open to CAS simultaneously. If the maximum is reached, catalog management closes the least recently used catalog before opening another catalog. Normally, a catalog remains open once it has been opened.

Alias table available entry indicates whether there is a problem with the catalog alias table. This field should always say YES. If it says NO, try restarting the catalog address space. Performance is affected if catalog management does not have catalog aliases in the catalog alias table.

Alias levels specified is the search level for the multilevel alias facility. It is set either at system initialization by the SYSCATxx member of SYS1.NUCLEUS, or by the MODIFY CATALOG,ALIASLEVEL command.

SYS% to SYS1 conversion entry indicates whether the SYS% facility is on or off.

The next four entries indicate the hexadecimal addresses of the indicated tasks.

VOLCAT hi-level qualifier entry indicates the high level qualifier used for the tape volume catalogs of this system.

ENABLED FEATURES entry lists the features that have been enabled with the IGGCATxx parmlib member or the MODIFY CATALOG,ENABLE command.

DISABLED FEATURES entry lists the features that have been disabled with the IGGCATxx parmlib member or the MODIFY CATALOG,DISABLE command.

INTERCEPTS entry lists up to three entry points that have been intercepted by vendor products (that is, the vendor code gets control at one of those entry points first, before IBM® catalog code does). If no entry points have been intercepted, (NONE) appears.