DC205006 abend in native VSAM processing

Products

• IDMS
• IDMS - Database

Issue/Introduction

When processing a native VSAM file, IDMS is encountering this abend:-

01.00: 00 IDMS DC205006 V1 T1234 NVSAM ERR - PROGNAME FUNC = 18 FDBK = 000 R15 = 08 NVST = 08 R0 = 000 NVERR = 001
01.00: 00 IDMS DC205006 V1 T1234 DDN = VSAMFILE AREA = VSAMSEG.VSAMAREA SET

Environment

Release: All supported releases.

Cause

The operating system 31-bit storage available to the address space has been exhausted.

Resolution

If the IDMS CV startup JCL does not already specify REGION=0M, then change it so that it does – this will cause the CV to get as much 31-bit storage as it can. If it is already using REGION=0M, then reduce the size of any of the other database buffers, either VSAM or non-VSAM in order to free up some storage. Note that VSAM database buffers cannot be adjusted dynamically – they must be changed permanently in the DMCL - followed by refreshing the DMCL or cycling the CV. Non-VSAM database buffers can be adjusted dynamically with DCMT commands. Remember to make any dynamic changes permanent by making the same change in the DMCL as well.

Additional Information

Managing Buffers Dynamically
DCMT VARY BUFFER (for dynamic changes)
Buffer Statements (for permanent changes)