USEDDL


1 USEDDL=
2.1! Y
2.1 N
USEDDL
Specifies whether or not FM/IMS uses the IMS Data Definition utility (DFS3ID00) to generate dynamic PSBs when IMS management of ACBs is enabled (ACBMGMT=CATALOG).
Y
Dynamic PSBs are generated by submitting Data Definition Language (DDL) SQL statements to the Data Definition utility.
N
FM/IMS does not use the Data Definition utility.
These utilities are used instead:
  • The PSB Generation utility
  • The IMS Catalog Library Builder utility (DFS3LU00)
  • The ACB Maintenance utility
  • The IMS Catalog Populate utility (DFS3PU00)

    This method of generating dynamic PSBs has been deprecated, so using it is not recommended.

The default and recommended setting is USEDDL=Y.

Note:
  • Support for running the Data Definition utility in a BMP region was delivered with APAR PH45367/PTF UI81894 and enabled by IMS 15.3 and support for running it in a DL/I batch region was delivered with APAR PH51761/PTF UI91330 and enabled by IMS 15.4. Ensure you are at or above these levels to use the Data Definition utility.
  • The Data Definition utility can only be used to generate dynamic PSBs when IMS management of ACBs is enabled (ACBMGMT=CATALOG). When ACBs are managed by your installation (ACBMGMT=ACBLIB), the value specified for this parameter is ignored.

This parameter is optional. If it is not specified on the FMN1POPI macro statement, FM/IMS uses either the value specified on the FMN1POPD macro statement (if specified on that statement), or Y (otherwise).