Characteristics of the ARCCREXT Exit

The ABARS conflict resolution exit receives control during aggregate recovery verification when an INCLUDE data set to be recovered has the same name as a data set already existing at the aggregate recovery site. The ARCCREXT exit is called after ARCSKEXT.

Table 1 shows the possible decisions you can make concerning the ARCCREXT installation exit and the procedures needed to inform DFSMShsm of your decision.

Table 1. Possible Results of ARCCREXT Processing
IF YOU WANT TO	THEN
Stop the aggregate recover	Place return code 0 in the return code area of the parameter list.
Skip the data set in conflict	Place return code 4 in the return code area of the parameter list.
Replace the existing data set with the data set being recovered	Place return code 8 in the return code area of the parameter list.
Rename the data set being recovered	Perform the following steps: Put the new name in the area pointed to by the parameter list at offset 04. Pad the name on the right with blanks. You cannot rename a migrated VSAM data set. If you try, DFSMShsm skips the recovery of the VSAM data set. Migrated non-VSAM data sets can be renamed if only the high-level qualifier of the data set name is changed. Using this exit to rename more than just the data set’s high-level qualifier causes an error (message ARC6325E) and the data set will not be processed during ARECOVER. Place return code 12 in the return code area of the parameter list.

The disposition you specify for a data set in this installation exit takes precedence over subsequent processing. A data set is replaced or renamed, if specified, regardless of whether the ARECOVER REPLACE command is specified.