Use Diagnostic data format (-diagFormat) to specify the format of the diagnostic data files.

Operating system and syntax UNIX / Windows -diagFormat { CSV | JSON }
Use with Maximum value Minimum value Single-user default Multi-user default
Database Server CSV
CSV
Specifies that diagnostic data is written in quoted format, separated by a specified separator, one line per event. The default separator is a space, but can be changed with the -diagFS parameter.
JSON
Specifies that diagnostic data is written in JSON format, one object per event.

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.