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VSAM File Tuning, ICF/VSAM Catalog Reporting, VTOC Display and Modification

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By selecting various fields from the wide choice available, it is possible to construct reports that concentrate on one particular area of interest.

An Advanced customised report can be an invaluable tool to the more experienced users, who prefer to apply their local knowledge to the information available from the catalog statistics.

The control cards below demonstrate some of the additional parameters available for customised reporting, which are not displayed on the standard report.

         REPORT VCAT  DSN 25  EXCPS RECSTATS 28   IXL CISIZE BUFSP 12    NSEC
         LISTCAT  DDNAME=CBLV93
                  TYPE=K               * Select:  KSDS only
                  KEY=A.DEMO           *          DSN's starting 'A.DEMO' only.
 ______________________________________________________________________________________________
|                                                                                             /
|   USERCAT CBLV93 (3390)    EXCPS   -- RECORD STATISTICS --     IXL  CISIZE  BUFSP      NSEC \
| o ---------------------    -----     DEL   INS   UPD   INP     ---  ------  -----      ---- /
|                                                                                             \
|                                                                                             /
| o A.DEMO.HIGH.EXCPS.INP     17.2K      1  9760        9779           2048   16000        39 \
|                             6253                                 3    512                   /
|                                                                                             \
| o A.DEMO.ORDINARY.1          159       3     1     2   197K          1536    4096           /
|                              165                                 1    512                   \
|                                                                                             /
| o A.DEMO.ORDINARY.2           60                   2    39           1536    4096           \
|                               46                                 1    512                   /
|                                                                                             \
| o A.DEMO.ORDINARY.3         2075       9     5  1424  18.7K          1536    4096           /
|                              649                                 1    512                   \
|                                                                                             /
| o A.DEMO.ORDINARY.4         2674       1  4415           1           2048   16000        11 \
|                              939                                 2    512                   /
|                                                                                             \
| o A.DEMO.ORDINARY.5         1646       9     4  1047  8738           1536    4096           /
|                              591                                 1    512                   \
|                                                                                             /
| o A.DEMO.MORE.IX.EXCPS      2475K     18   448   563K 1806K          3072   14336         5 \
|                             6830K                                2   1536                   /
|                                                                                             \
| o A.DEMO.XYZ.1                12K     21     3  10.9K 67.8K          1536    4096           /
|                              579                                 1    512                   \
|                                                                                             /
| o A.DEMO.XYZ.2               225             5     2   287           1536    4096           \
|                              231                                 1    512                   /
|                                                                                             \
| o A.DEMO.XYZ.3               440       9     7    64  2028           1536    4096           /
|                              187                                 1    512                   \
|/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\_/

Notes:

The user can select from 59 Catalog and 15 VTOC items to build reports of salient information.

The maximium report width is 250 characters.

This report shows catalog information that relates to online response or batch processing times.

Running with the SUBSET SEV=3 would have selected some of these files as having potential problems. See the Monitoring example earlier in the brochure.

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2006-09-13 14:50