Enabling tracing for the System Data Engine at startup

For certain problems, IBM® Software Support might request that you enable tracing for the System Data Engine at startup by modifying the HBOIN DD.

Procedure

  1. To enable tracing, IBM Software Support might require you to add the trace command DEBUG LEVEL to the beginning of the HBOIN DD. 
    //HBOIN    DD *     
               DEBUG LEVEL
               ...
    LEVEL
    Is the level of tracing to be enabled. The value of level will be provided by IBM Software Support when you must enable tracing. Tracing should not be enabled otherwise.
  2. Start the System Data Engine for the trace command to take effect.
  3. Verify that the appropriate messages are written in the HBODEBUG data set.

Results

The tracing output is in the HBODEBUG data set if it is in the JCL for the System Data Engine started task, or in the HBODUMP data set if the HBODEBUG data set is not in the JCL for the System Data Engine started task. See the following example for specifying the HBODEBUG DD.
//HBODEBUG  DD SYSOUT=*

What to do next

To disable tracing, use one of the following methods:
  • Remove the trace command DEBUG LEVEL and recycle the started task.
  • Run the following command:
    F STCNAME, DEBUG CLEAR
Ensure that you remove the trace command when the tracing function is not needed.