ISNAP command

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The ISNAP command shortcut writes out DSC in-core trace table to SYSOUT DD(IQITRSNP).

Syntax

Read syntax diagramSkip visual syntax diagram ISNAP ALLCOMM

Operands

ALL
Writes out a SNAPDUMP of the entire TSO region.
COMM
Writes out a SNAPDUMP of the COMMAREA.

Usage notes

  • If no operand is specified, ISNAP writes out the DSC in-core trace table into dynamically allocated SYSOUT DD(IQITRSNP).
  • You can enter ISNAP at any time from any panel.
  • You should use this command shortcut as instructed by IBM support personnel to generate required test data during an investigation of a customer reported problem.
  • The normal diagnostics session procedure is as follows:
    1. Restart your DSC controlled ISPF session.
    2. Enter the main command IDIAG TR to start DSC diagnostics.
    3. Repeat the failing scenario while taking a screen-shot at every step.
    4. Enter the command shortcut ISNAP to write out the DSC in-core trace table into dynamically allocated SYSOUT text file of DD(IQITRSNP).
    5. Download the text files DD(IQITRSNP) and DD(IQILOGPR) of your DSC session.
    6. Transmit the two diagnostics text files along with the screen shots of the failing scenario to IBM FTP site.
    7. Enter the main command IDIAG ALLOFF to stop all DSC diagnostics.