Use Diagnostic prefix value (-diagPrefix) to specify a common prefix to standard diagnostic data files.

Operating system and syntax UNIX / Windows -diagPrefix prefix
Use with Maximum value Minimum value Single-user default Multi-user default
Database Server — — — diagEvent_
prefix
A string of printable ASCII characters used to prefix standard diagnostic data files. The prefix can be a maximum of 16 bytes.
Also, the fully-specified file name cannot exceed 300 bytes. This is the sum of:
  • Diagnostic directory specification
  • Event sub-directory specification
  • Diagnostic data file. For example, prefixlocktable_summary.csv.

To change this parameter while the database is running, use PROMON or the _DbParams VST.

You can use this parameter to support continuous operation of the database. For more information, see Change database parameters while the database is running.