CA Datacom VSAM Transparency (VSAMT) subsystem requires a z/OS subsystem (SSI) to work in batch.
On a z/OS LPAR, multiple VSAMT subsystems can be concurrently active.
Sometimes it is necessary to check which VSAMT subsystems are active.
CA Datacom VSAM Transparency batch on z/OS
If the VSAMT subsystems are defined via CAIRIM, a CAISUBU utility must be executed:
//CAISUBU EXEC PGM=CAISUBU
//STEPLIB DD DISP=SHR,DSN=your.Common.Services.CAW0LINK
It generates a report like the following one:
CAS9041I Name SSCT Address Status Init Routine
CAS9042I CA$K 00C09F88 ACTIVE
CAS9042I LAM 00C01078 ACTIVE LAMMVSI
CAS9042I PANV 00C01050 ACTIVE
CAS9042I VT01 00BFFFA8 ACTIVE DVVSI01
The VSAMT subsystems can be easily identified in the above report as they have an Init Routine name composed by the string DVVSI followed by the subsystem prefix (as specified on CAIRIM statement); DVVSI01 in the above sample.
A subsystem could be also defined without using CAIRIM; in this case the D SSI MVS command returns the name of the active subsystems.
Finally, some z/OS monitors provide commands to list MVS subsystems. With CA Sysview, one can issue the SUBSYS command and then search for the string DVVS (F DVVS).