You can perform chain analysis while the database is offline, for example, if an issue prevents startup. When run offline, the chain analysis utilities PROUTIL CHANALYS and PROUTIL DBANALYS perform the same functions described in Perform chain analysis online.

To diagnose issues while the database is offline, you can run PROUTIL CHANALYS or PROUTIL DBANALYS concurrently with other diagnostic utilities, as long as all the utilities support read-only connections.

To run diagnostic utilities in read-only mode, append the -RO parameter in the command line, as follows: 

 proutil db-name -C chanalys -RO

For more details, see PROUTIL CHANALYS qualifier, PROUTIL DBANALYS qualifier, and Read-only connections.