Unlike the older Compatible Query Mode (CQM) which relied on native database client drivers, DQM relies entirely on type-4 placed in the Cognos deployment directory (typically /drivers ).
In Cognos Administration, review your data source connection details. Ensure the host, port, and database name are correct.
Navigate to the Cognos installation directory: /logs/ Unlike the older Compatible Query Mode (CQM) which
If your database enforces SSL, the JDBC URL must include SSL parameters. For PostgreSQL:
If the above steps do not work, you must examine the specific logs: Navigate to the Cognos installation directory: /logs/ If
: If you are searching for specific fixes, try narrowing your search to include the database type (e.g., "XQE-JDB-0001 SQL Server").
nc -zv [database_host_ip] [port] # or via PowerShell Test-NetConnection -ComputerName [database_host_ip] -Port [port] Use code with caution. These logs provide direct clues – e
These logs provide direct clues – e.g., a pg_hba.conf entry missing means you need to add a rule to allow the application’s IP.