SAS Companion for the OS/390 Environment

Reserved OS/390 DDnames

In addition to the logical names shown in SAS System Files, which have a special meaning to SAS, you should be aware of the following reserved DDnames, which have a special meaning to the operating environment:

JOBCAT: specifies a private catalog that the operating environment is to use instead of the system catalog for the duration of the job (including jobs with more than one job step).
JOBLIB: performs the same function as STEPLIB (described in SAS System Files) except that it can be used in a job that has more than one job step.
PROCLIB: specifies a private library of cataloged procedures to be searched before the system library of cataloged procedures is searched. See your local SAS Support Consultant for information about whether the PROCLIB DDname convention is used at your facility.
SORTLIB: is used by some host sort utilities.
SORTMSG: is used by some host sort utilities to print messages.
SORTWKnn: specifies sort work data sets for the host sort utility. If allocated, this will be used instead of the SASSWKnn data sets.
STEPCAT: specifies a private catalog that the operating environment is to use instead of the system catalog for the current job step.
SYSABEND: in the event of an abnormal job termination, SYSABEND specifies a data set that receives a medium-sized dump that consists of user-allocated storage and modules, system storage related to current tasks and open files, and system and programs related to the terminated job. See also SYSMDUMP and SYSUDUMP below.
SYSHELP: is used by TSO HELP libraries (not the SAS HELP facility).
SYSLIB: is used by some IBM system utility programs.
SYSMDUMP: in the event of an abnormal job termination, SYSMDUMP specifies a data set that receives a system dump in IPCS format. The contents of the dump are determined by OS/390 installation options, though SYSMDUMP generally includes all user-allocated storage, all system-allocated storage used to control job execution, and all program modules (system modules and user programs) that were in use at the time the dump was taken.
SYSOUT: is used by some utility programs to identify an output data set.
SYSPRINT: is used by some utility programs to identify a data set for listings and messages that may be sent to the printer.
SYSUADS: is used by some TSO commands that may be invoked under the SAS System.
SYSUDUMP: in the event of an abnormal job termination, SYSUDUMP specifies a data set that receives a "short" system dump that consists of user-allocated storage and modules and system storage related to current tasks and open files. See also SYSABEND and SYSMDUMP above.
SYSnnnnn: is reserved for internal use (for dynamic allocation) by the operating environment.

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