ATTACH

1 ATTACH=
2.1! CAF
2.1 RRSAF

ATTACH

Specifies which attachment facility is to be used to connect to and use the Db2® subsystem defined by SSID, to process SQL statements, commands or instrument facility interface (IFI) calls.

The properties and requirements of the various Db2® attachment facilities are documented in the Db2® Application Programming and SQL Guide.

CAF

The call attachment facility will be used to connect to and use the Db2® subsystem defined by SSID.

CAF is the default and recommended value. The CAF attachment works concurrently with other Db2® applications that use the DSNELI (DSN) attachment, the DSNALI (CAF) attachment, but not the DSNRLI (RRSAF) attachment.

RRSAF

The Db2® Resource Recovery Services attachment facility (RRSAF) will be used to connect to and use the Db2® subsystem defined by SSID.

RRSAF uses z/OS® Transaction Management and Recoverable Resource Manager Services (z/OS® RRS) and this service must be active.

RRSAF should only be used in situations where there will be no conflicts with other Db2® applications that use other attachment facilities, especially the DSNELI attachment. For example, it is not possible to run Db2's SPUFI and FM/Db2 on separate ISPF split screens when FM/Db2 is using the RRSAF attachment (because of the conflict with the DSN attachment used by Db2's SPUFI).

The default is CAF.