Datacom MUF shows Area extended without x37 failure
Article ID: 19726
Updated On:
Products
Issue/Introduction
Messages in the Datacom Multi-user Facility (MUF) output log show that an Area allowed for dynamic extend was extended during a data load without any x37 failure or messages.
Messages in the MUF log:
DB01703I - DYNAMIC EXTEND OF AREA CBX00106 STARTED
DB01701I - DYNAMIC EXTEND OF AREA CBX00106 ENDED, TRACKS BEFORE 2,490 TRACKS AFTER 2,610
Also, a CXX report of the Area before the load showed the Area with a single Table was only 13% full.
Cause
Prior MUF failure.
Resolution
The dynamic extend occurred because the area free space index was inaccurate. This can occur as a result of a MUF failure since the free space index is maintained in memory and processed by the pipeline. The free space index is located in the IXX and Data buffers. If a MUF fails, both the free space index and the CXX statistics may no longer reflect what is actually in a data area.
If you experience this symptom, you can run DBUTLTY with RETIX KEYNAME=*DATA to repair the free space index and DBUTLTY with KEYNAME=*SETR to update the CXX statistics with a more accurate record count.
Additional Information
More information can be found in the Datacom/DB DBUTILTY Reference Guide.
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