Specifying miscellaneous IMS™ subsystem details
Use the parameters in Miscellaneous IMS subsystem details to specify some miscellaneous IMS™ subsystem details that FM/IMS requires.
| Parameter | Description |
|---|---|
| ACBMGMT | Whether IMS™ manages the active application control blocks (ACBs) in the IMS catalog or your installation manages the ACBs in ACB libraries (ACBLIBs). |
| ACBSHR | Whether the ACBs that this IMS subsystem uses are also used by other IMS™ subsystems. |
| CATALIAS | The alias for the IMS™ catalog. |
| DYNPRFN | The maximum number of dynamic PSBs required by concurrent FM/IMS users (when the PSBs are generated by the IMS Data Definition utility) or by concurrent FM/IMS BMP users (otherwise). |
| DYNPRFX | The first 1 - 5 characters of the dynamic PSB names used by FM/IMS functions. |
| DFSRRC00 | The name of the program that FM/IMS attaches to invoke IMS™. |
| PADS | Whether or not Program Access to Data Sets (PADS) is used in the environments in which FM/IMS is run. |
| REGCATLG | Whether the IMS™ catalog is registered with DBRC. |
| UAGNS | Whether or not the subsystem uses AGNs to secure dependent regions. |
| USEDDL | 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). |
| XDOPTLB |
When APAR PH17975 is not applied: Whether the ACB Maintenance utility deletes all PSBs and DBDs from the DOPT ACBLIB data set and makes all their space available for reuse, before building control blocks for the dynamic PSB. When APAR PH17975 is applied: This parameter is ignored. The ACB Maintenance utility deletes all PSBs and DBDs from the DOPT ACBLIB data set and makes all their space available for reuse, before building control blocks for the dynamic PSB. |
All the parameters in Miscellaneous IMS subsystem details can be specified on the FMN1POPD and FMN1POPI macro statements except for the PADS parameter, which can only be specified on the FMN1POPD macro statement. For detailed information on how to code these parameters, see FM/IMS options.