DFSDFxxx member of the IMS PROCLIB data set
The DFSDFxxx member of the IMS™ PROCLIB data set consolidates the specification of processing options for many different IMS components and functions.
The parameters in the DFSDFxxx member are organized into sections. Each section has a different purpose and begins with a predefined header that identifies the section. Each section supports different parameters and syntax.
- Databases
- Dynamic database buffer pools
- Dynamic resource definition (DRD)
- Exit routines
- The Fast Path 64-bit buffer manager
- The IMS abend search and notification procedure
- The IMS catalog
- The IMS Common Service Layer (CSL)
- The IMSRSC repository
- Shared queues
All the sections within the DFSDFxxx member of the IMS PROCLIB data set are optional. If you include a section for any of the functions, the section must begin with the appropriate predefined header.
A DFSDFxxx member of the IMS PROCLIB data set consists of one or more fixed-length character records (the configuration data set can be of any LRECL greater than eight, but it must be fixed record format). The rightmost-eight columns are ignored but can be used for sequence numbers or any other notation. Keyword parameters can be specified in the remaining columns in free format, and they can contain leading and trailing blanks. You can specify multiple keywords in each record; use commas or spaces to delimit keywords. Statements that begin with a “*” or “#” in column 1 are comment lines and are ignored. Additionally, comments can be included anywhere within a statement by enclosing them between “ /* ”and “*/”, for example, /* PROCLIB comments */. Values that are specified in this member of the IMS PROCLIB data set are case-sensitive. In general, use uppercase for all parameters.
You can use the IMS Syntax Checker to modify the DFSDFxxx member of the IMS PROCLIB data set.
- CATALOG and CATALOGxxxx sections of the DFSDFxxx member
The CATALOG and CATALOGxxxx sections contain options for an IMS catalog. The section headers must be specified as <SECTION=CATALOG> or <SECTION=CATALOGxxxx>.
The CATALOG and CATALOGxxxx
sections are valid in DB/DC, DBCTL, and batch environments.
- COMMON_SERVICE_LAYER section of the DFSDFxxx member
The COMMON_SERVICE_LAYER section of the DFSDFxxx member of the IMS PROCLIB data set specifies options for the Common Service Layer (CSL), such as IMSplex name, ACB sharing, global online change, command authorization checking, OLCSTAT, DRD, and global resource status. The section is defined by the header <SECTION=COMMON_SERVICE_LAYER>.The COMMON_SERVICE_LAYER section is valid in DB/DC, DBCTL, and DCCTL environments. - DATABASE section of the DFSDFxxx member
The DATABASE section of the DFSDFxxx member specifies options for databases, such as database versioning, the size of storage pools for ACBLIB members and release ownership of OLR at normal or abnormal shutdown of IMS. The section is defined by the header <SECTION=DATABASE>.The DATABASES section is valid in DB/DC, DBCTL, and batch environments. - DIAGNOSTICS_STATISTICS section of the DFSDFxxx member
The DIAGNOSTICS_STATISTICS section of the DFSDFxxx member specifies options for the IMS Abend Search and Notification procedure (DFSIASN0) and for obtaining database and transaction statistics. The section is defined by the header <SECTION=DIAGNOSTICS_STATISTICS>.The DIAGNOSTICS_STATISTICS section is valid in DB/DC, DBCTL, and DCCTL
environments. - DYNAMIC_RESOURCES section of the DFSDFxxx member
The DYNAMIC_RESOURCES section of the DFSDFxxx member specifies options for import and export, log write ahead, and system resource definition data sets. This section is processed only if DRD is enabled (MODBLKS=DYN). If DRD is not enabled, this section is ignored. The section is defined by the header <SECTION=DYNAMIC_RESOURCES>.The DYNAMIC_RESOURCES section is valid in DB/DC,
DBCTL, and DCCTL environments. - FASTPATH section of the DFSDFxxx member
The FASTPATH section of the DFSDFxxx member specifies options for Fast Path, such as the use of the Fast Path 64-bit buffer manager. The section must begin with the header <SECTION=FASTPATH>.The FASTPATH section is valid in DB/DC and DBCTL
environments. - OSAMxxx section of the DFSDFxxx member
The OSAMxxx section of the DFSDFxxx member specifies definitions used to dynamically add, update, or delete OSAM subpools. The section must begin with the header <SECTION=OSAMxxx>.The OSAMxxx section is valid in DB/DC, DBCTL, and batch
environments. - REPOSITORY section of the DFSDFxxx member
The REPOSITORY section of the DFSDFxxx member specifies the repository types that are to be enabled at IMS. The valid type is: IMSRSC repository, which is used to store the stored resource definitions for DRD resources. The section must begin with the header <SECTION=REPOSITORY>.The REPOSITORY section is valid in DB/DC, DBCTL, and DCCTL environments. - SHARED_QUEUES section of the DFSDFxxx member
The SHARED_QUEUES section of the DFSDFxxx member of the IMS PROCLIB data set specifies options for queue names, structure names, and group names. The section must begin with the header <SECTION=SHARED_QUEUES>.The SHARED_QUEUES section is valid in DB/DC and
DCCTL environments. - USER_EXITS section of the DFSDFxxx member
The USER_EXITS section of the DFSDFxxx member specifies the user exits to be called. The section must begin with the header <SECTION=USER_EXITS>.The USER_EXITS section is valid in DB/DC, DBCTL,
and DCCTL environments. - VSAMxxx section of the DFSDFxxx member
The VSAMxxx section of the DFSDFxxx member specifies definitions used to dynamically add, update, or delete VSAM subpools. The section must begin with the header <SECTION=VSAMxxx>.The VSAMxxx section is valid in DB/DC, DBCTL, and batch
environments.