IDMS statistics written to log and SMF overhead

Products

• IDMS
• IDMS - Database

Issue/Introduction

Currently IDMS performance monitor statistics are written to the DC log and also to z/OS SMF.
Does this incur extra overhead?
To reduce CPU, is there any subtype that can be selected?

Environment

Release: 19.0

Resolution

Writing to both the log and SMF will incur extra overhead. There is no good reason to write to both.  Either write to one or the other, SMF is preferred.
SMFTYP4=YES and SMFTY30=YES can also be specified to write additional SMF type 4 and 30 records. 
These options cause extra SMF records to be written. These options should only be specified if using external reporting tools that use these records.
The IDMS supplied reports supply don't use SMF type 4 and 30 records..

Additional Information

See article 26439 - Produce SMF records for tasks and transactions running under IDMS.