SYSTEM Statement › SYSTEM Statement Syntax Rules › Example: SYSTEM Statements

Example: SYSTEM Statements

Adding a System

The following SYSTEM statement shown adds DC/UCF system 80 to the data dictionary. Parameters not explicitly coded default as indicated in the syntax.

ADD SYSTEM 80
    CUSHION IS 6
    DEADLOCK DETECTION INTERVAL IS 300
    DUMP
    GENERATION IDENTIFICATION IS SYS80
    INACTIVE INTERVAL IS 300
    NOJOURNAL RETRIEVAL
    LOG DATABASE
    MAXIMUM ERUS IS 10
    MAXIMUM TASKS IS 13
    OPERATING SYSTEM IS MVS
    PRINT KEY IS PF12
    PRINTER CHECKPOINT IS 50
    PROGRAM POOL IS 100
    REENTRANT POOL IS 300
    RESOURCE TIMEOUT INTERVAL IS 1800
    RUNAWAY INTERVAL IS 60
    RUNUNITS
      FOR MSGDICT = 2
      FOR SIGNON = 2
      FOR SECURITY = 1
      FOR SYSTEM/DEST = 2
    SNAP SYSTEM OFF
    SNAP SYSTEM PHOTO OFF
    STACKSIZE IS 1200
    STATISTICS INTERVAL 3600
    STORAGE POOL IS 345
    SVC IS 173
    SYSCTL IS SYSCTL
    SYSLOCKS IS 1200
    SYSTRACE ON ENTRIES = 250
    TICKER INTERVAL IS 5
    USERTRACE ON ENTRIES = 500.

Modifying a System

The following SYSTEM statement modifies the definition of DC/UCF system 80. Parameters not explicitly coded remain unchanged.

MODIFY SYSTEM 80
    NODUMP.

Displaying a System

The SYSTEM statement shown next, if issued after the MODIFY SYSTEM 80 statement shown above, displays the definition of DC/UCF system 80. The display options default as specified in the SET OPTIONS statement.

DISPLAY CURRENT SYSTEM.

The SET OPTIONS statement is described in SET OPTIONS Statement.

Deleting a System

The following SYSTEM statement deletes the definition of DC/UCF system 80 from the data dictionary.

DELETE SYSTEM 80.

Non-Stop Processing

This chapter describes the enhancements that enable CA IDMS to support continuous operations.

Expanded Statistics Fields

Several fields used to collect CA IDMS run-time statistics have been enlarged to accommodate the larger values that can be expected with faster processors and non-stop operations.

The field size has been increased from single to double words for statistics related to storage management and CPU utilization. These changes affect the following DSECTs:

• #SCADS—Subtask control area
• #SCTDS—Storage control table
• #SMTDS—Storage management table

The following system tasks and operator commands now display larger values:

• OPER WATCH STORAGE SUBPOOL
• OPER WATCH STORAGE POOL USAGE <nn>
• DCMT DISPLAY ACTIVE STORAGE <pool number>
• DCMT DISPLAY MPMODE
• DCMT DISPLAY STATISTICS SYSTEM
• DCMT DISPLAY SUBTASKS
• DCMT DISPLAY SUBTASK <nn>

Where space is limited on the output screen, large values are displayed in scientific notation.