Chapter 18: Support for IMS DB System Commands

Enterprise Server currently provides support for issuing a subset of DB system commands. These commands enable you to control and query the statuses of IMS databases.

Supported IMS DB commands

/DIS[PLAY] DB ALL | database1 [database2] ...
/STO[P] DB database1 [database2] ...
/STA[RT] DB database1 [database2] ...

Database command interfaces

TN3270
  • Database commands can be entered via a TN3270 session connected to /IMS.
  • The response output from the command will be sent back to the terminal session.
ESMAC
  • DB commands can be entered via the ESMAC IMS Control panel.
  • The response output is sent back to the ESMAC panel.
JCL
  • DB commands can be entered via the IMSDBU JCL interface using the PARM parameter
  • The response output is sent back to the job in the SYSOUT DD for the job step.
  • Step condition code is set if command fails.
  • Sample JCL step
    //STEP01  EXEC PGM=MFDBUJCL,PARM='/DIS DB DEMO03DD'
    //SYSOUT  DD SYSOUT=*
    
  • Only one command can be entered per JOB step.

ES server warm/cold start


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