CICS VSAM Transparency for z/OS, Version 1.2


VSAM file DD statement changes

The method that CICS® VT uses to intercept VSAM calls from your batch application programs is explained in The runtime component. To enable call interception, update the DD statements that define the VSAM base cluster and alternate index data sets. Below is the DD statement before and after CICS VT migration for the KSDS data set used earlier in this chapter:

Before:

//KSDS001  DD DSN=VID.VIDKSDS,DISP=SHR
//KSDSAIX  DD DSN=VID.VIDKSDS.AIX,DISP=SHR 

After:

   
//KSDS001  DD SUBSYS=(ssi,db2id,DIM name) 
//KSDSAIX  DD SUBSYS=(ssi,db2id,AIX DIM name)

The parameter values for the SUBSYS statement are:

Parameter Description
ssi The name of the VSAM subsystem interface that you specified at CICS VT installation. See Installing the batch subsystem.
db2id The subsystem ID of the DB2® table containing the migrated data.
DIM name The name of the DIM driver. This is also the Start of changedefaultEnd of change name of the plan used by CICS VT to connect to DB2. If you want to use the read-only DDM, specify the name of the read-only DDM module instead of the DIM.
AIX® DIM name The name of the DIM driver. This is also the Start of changedefaultEnd of change name of the plan used by CICS VT to connect to DB2.

You can override the default plan name. See Overriding the default DB2 plan name. Ensure that the batch job user ID has the required authority to execute the DB2 plan.





Last updated: February 8, 2013 20:43:2