Creating an RDE to register DMB information

Create an RDE to register the correct DMB information by using the LICON utility.

About this task

This task is optional because if you do not create an RDE with the LICON utility, Integrity Checker creates an RDE automatically when the database is accessed for the first time after Integrity Checker is activated. In this case, Integrity Checker creates an RDE for each database that is accessed while IMS is online. Therefore, the performance of IMS online processing might decline depending on the number of databases. Consider creating RDEs manually by using the LICON utility to avoid performance degradation.

If you want Integrity Checker to create RDEs automatically, you can skip this task.

Procedure

Use the LICON utility to create an RDE.
Ensure that you provide the following information with the JCL statements:
  • Specify the DBD library, the ACB library, or the IMS directory that contains the DMB information to be used in DMB verifications.
  • To verify the user exit routine, add the data set that contains the user exit routine to be used in DMB verifications to the STEPLIB concatenation.

Provide the INIT.DB command in the FABLIN input stream. The RDE is created in the LICON data set that is specified by the global option module found in the STEPLIB concatenation.

The following JCL example is for the LICON utility. INIT.DB DBD(*) specifies that an RDE is created for every DBD member in the DBD library IMSVS.DBDLIB.

//LICJOB   JOB
//        EXEC PGM=FABLIU00
//STEPLIB   DD DISP=SHR,DSN=HPS.SHPSLMD0
//          DD DISP=SHR,DSN=IMSVS.SDFSRESL
//DBDLIB    DD DISP=SHR,DSN=IMSVS.DBDLIB
//FABLPRNT  DD SYSOUT=*
//FABLIN    DD *
  INIT.DB DBD(*)
/*