Health Checks › DISK_SYSPARM_DSNDUPVL_N

DISK_SYSPARM_DSNDUPVL_N

Description

DSNDUPVL provides a way to handle data sets with the same name that reside on different volumes.

Setting DSNDUPLV to N CA Disk considers the DSNINDEX records for the data sets to be different data sets. These records are handled separately for version checking and for retrieval of DSNINDEX information.

Setting DSNDUPLV to Y CA Disk considers the DSNINDEX records for the data sets to be the same data set. This setting allows CA Disk to process data sets as they are moved from volume to volume.

DSNDUPVL is used by the following processes:

• REPORTS
• BACKUP/ARCHIVE
• BACKUPCC
• IXMAINT

  IXMAINT processing uses it when the COPIES= parameter is specified.

• DSCL

  DSCL selection processing uses DSNDUPVL when information from DSNINDEX (ARCDATE) is needed.

• RECOVER

  RECOVER processing uses the DSNDUPVL when information from DSNINDEX (ARCDATE) is needed.

• Fast ARCHIVE and MERGE

  Fast ARCHIVE and MERGE processing use this SYSPARM for selecting the DSNINDEX record that will be reused.

Best Practice

To allow a data set to move to different volumes and still be recognized as the same data set, set the sysparm DSNDUPVL to Y.

Parameters Accepted

AGE(7)

Debug Support

Yes

Verbose Support

Yes

Reference

See "System Parameter Definitions" in the Systems Guide.

Messages

ADSH0061E SYSPARM DSNDUPVL is set to N which does not allow volume pooling for data sets.