Access Method Services

For the ALLOCATE and DEFINE commands (&ACSENVIR='ALLOC'), the data class ACS routine and then the storage class ACS routine are executed. If the storage class is not null, the management class ACS routine and then the storage group ACS routine are executed.

For the IMPORT command, the storage class ACS routine is executed first. If the storage class is not null, the management class ACS routine and then the storage group ACS routine are executed.

The STORCLAS ACS routine is not redriven or invoked on data set rename. Redriving the MGMTCLAS ACS routine on data set rename invokes the management class ACS routine when an SMS managed cluster, Generation Data Set (GDS) or non-VSAM data set is renamed. Catalog management invokes the MGMTCLAS ACS routines during rename processing. You can reassign a different management class based on the following data set attributes:

New data set name
Data set type
Data set organization
Expiration date in the catalog
Old management class
Data class
Storage class
Record organization
User information
Group information

ACS routines support RENAME. The following read-only variables are set for the management class ACS routine:

&ACSENVIR:RENAME
&DSN of the new data set name
&DSORG
&DSTYPE
&EXPDT
&STORCLAS
&DATACLAS
&MGMTCLAS
&GROUP of the job
&USER of the job
&HLQ
&LLQ