The upgrade process for Datacom/AD involves a step to install and configure the new version of the software, followed by possibly other steps to migrate the application database to the Multi-User Facility (called MUF) for this new version. This migration is made using job AXPOR01, which is customized for each database that is migrated.
While there are instructions in the JCL for AXPOR01 that will ensure a successful migration, if these are not fully understood, it is possible to receive an error and an abend in the DDRTVBAS step. The job log might show messages similar to these:
12.47.55 JOB64533 +USER REQUESTED ABEND. CODE IS 16
12.47.55 JOB64533 IEA995I SYMPTOM DUMP OUTPUT 540
540 USER COMPLETION CODE=1000
540 TIME=12.47.55 SEQ=01829 CPU=0000 ASID=003C
540 PSW AT TIME OF ERROR 078D1000 A6601940 ILC 2 INTC 0D
540 ACTIVE LOAD MODULE ADDRESS=26600FF8 OFFSET=00000948
540 NAME=VTPM9803
540 DATA AT PSW 2660193A - 00181610 0A0D0027 8000E4E2
540 GR 0: 80000000 1: 800003E8
540 2: 0000D4DC 3: 00007B00
540 4: 00008B00 5: 000170C4
540 6: 0000F000 7: 000114E0
540 8: 0000C7E8 9: 0000C7E8
540 A: 26601904 B: 00007228
540 C: A6600FF8 D: 0000D200
540 E: A6601914 F: 00000000
540 END OF SYMPTOM DUMP
12.47.55 JOB64533 IEF450I AXPOR01 DDRTVBAS - ABEND=S000 U1000 REASON=00000000 541
541 TIME=12.47.55
This problem is typically caused by not using the correct loadlibs in this step as identified in the JCL instructions. In the AXPOR01 JCL for the DDRTVBAS step, the shipped (uncustomised) version has:
//DDRTVBAS EXEC PGM=DDRTVCAT,REGION=2M
// INCLUDE MEMBER=B14STLIB
// DD DISP=SHR,DSN=PRODAD.TARGET.LOADLIB
and the flowerbox instruction #13 says:
//* 13. PERFORM A GLOBAL CHANGE OF "PRODAD.TARGET.LOADLIB" TO THE
//* LIBRARY THAT CONTAINS THE DDRTVCAT BASIS MODULE.
Following the instruction #13, the PRODAD.TARGET.LOADLIB value will be changed to the loadlib for your application that uses Datacom/AD. For example, if using the Workload Automation Restart Option for z/OS Schedulers product, you should change PRODAD.TARGET.LOADLIB to the loadlib that contains the module called L7601.
Once this has been corrected, it is recommended to rerun this AXPOR01 job from the beginning.
For further information about the migration process, please see the Datacom/AD Installation Guide, in the section "Starting Your Product › Migration/Porting Phase for Non-SQL Created Databases."