Other control statements used in IMS environments
These topics include control statements that can be used in an IMS environment.
Sequential buffering control statements
Use sequential buffering control statements to specify I/O operations that require sequential buffering (SB), capture internal calls to the SB buffer handler, take a snapshot of SB control blocks, and perform an SB buffer handler self-check.
High-speed sequential processing control statements
Use HSSP control statements to set up the environment in which you process a selected PCB with HSSP, create an image copy of a designated DEDB area, restrict access of a specific HSSP or non-HSSP application program to only designated DEDB areas, and specify where to allocate the private buffers for HSSP processing.
Set Index Maintenance Off (SETI) control statement
The Set Index Maintenance Off (SETI) control statement enables you to suppress index maintenance for any DEDB database where the secondary index is defined for the BMP application and where the PSB is set to
psbname
.
Database resource adapter startup table for CCTL regions
Use the database resource adapter (DRA) startup table to provide definitional parameters for the coordinator control (CCTL) region. The DRA startup table establishes the subsystem name of the IMS that is being connected to, and defines the characteristics of the DRA, such as the number of threads.
DFSDFSRT
DFSDFSRT is a REXX program that starts the z/OS® Interactive Problem Control System (IPCS) with the IMS Dump Formatter.
IMS Installation Defaults module (DFSIDEF0)
You can use the DFSIDEF0 module to define options for database recovery control (DBRC). You can also use the module to define supervisor call instruction (SVC) numbers that are reserved for use by the generated IMS system.
Parent topic:
System definition