DAB CACHE report

This report supplies information of the files served by a DAB cache.

Report output

The DAB CACHE report is output only at the explicit request of the SM2 user by means of the SELECT-DAB-CACHE statement. After this statement has been entered, the user receives not only the DAB report, but also the DAB CACHE report for the DAB caches he or she has selected.

The DAB CACHE report provides detailed information of files served by DAB.

Overflow screens may be requested for this report.
The monitored data output is sorted according to the sum of READ and WRITE.
It is possible to output information on up to 16 DAB caches.

 HOST0001 SM2 DAB CACHE           CYCLE:   60 S                   <date>  <time>

 ID: MMRD#SHPUB                       MOD: R      MED:MM SIZE(FIX):  250.0 MB    
                                                                                
                   FILE                   |S| READ  |RD-HIT| WRITE |WR-HIT|OVER  
                                          | | (1/S) | (%)  | (1/S) | (%)  |(1/S) 
 -----------------------------------------+-+-------+------+-------+------+----- 
 *SUMMARY                                 | |   0.0 |  0.0 |   0.0 |  0.0 | 0.0  
 -----------------------------------------+-+-------+------+-------+------+----- 

Monitoring information

ID	Name of the appropriate DAB cache as selected via the ADD-CACHE-ID operand of the SELECT-DAB-CACHE statement.
MOD	Cache mode
R	The cache is used as a read cache.
W	The cache is used as a write cache.
R/W	The cache is used as a read/write cache.
PFA	The cache is used as a PFA cache.
In the case of the R/W, W and PFA modes, the Force Out parameter is also specified. This indicates whether and at what fill level data written to the cache should be written back to the external data volumes.
N	Data is not written back (No)
L	Low fill level
H	High fill level
MED	Cache medium
MM	Main memory
SIZE	Size of the cache
FIX	Fixed size
VAR	Variable size at the time of data acquisition

Each line in this report contains data of the files served by the DAB cache with the specified CACHE-ID.
The individual columns contain the following data:

FILE	Name of the file served by the cache. If the file name is longer than 41 characters, it is truncated on the right.
S	Any file which was not served during the last monitoring cycle is marked with an asterisk (*) in this column (S = served). No data is output for this file.

The columns READ, RD-HIT, WRITE, WR-HIT and OVER have the same meaning as in the DAB report. However, the information they contain refers to individual files and not to the DAB cache as a whole.

In order to reduce the amount of data recorded, the following applies to the DAB-CACHE report when AutoDAB is used:

If the DAB cache is created with AREA=*BY-SYSTEM( ...) , the output does not include a list of the files served. Instead, it contains a summary of the entire DAB cache. The ( FILE=*SUMMARY) row of the DAB CACHE report thus contains the same data as the DAB report.

Monitored data on the files served by the cache can be output using the DAB statement SHOW-DAB-CACHING CACHE-ID=*ALL, INF=*SYSTEM-CACHED-FILES (CACHING=*ACTIVE).