Xqe-jdb-0001 Problem Establishing Connection. Please Check The Database Server 📥

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.

ping <database_host> (If host is localhost , skip this.)

: Try logging into the database directly using a third-party tool (like DBeaver or SQL Developer) with the exact same credentials used in Cognos to ensure the account is not locked. 5. Inspect the Cognos XQE Logs These logs provide direct clues – e

: The database server might be unreachable due to firewall settings, incorrect port numbers, or the server being offline.

Confirm that the JDBC driver in the installation folder matches the database version. Inspect the Cognos XQE Logs : The database

You develop a report on your laptop. You use a connection string pointing to localhost or 127.0.0.1 . Everything works fine. The Problem: You deploy that report to the production server. The connection string still says localhost . The production server tries to connect to "localhost," looking for a database on the production server itself , which doesn't exist.

Replace or downgrade the JCC driver version in the \drivers directory to a certified release. You use a connection string pointing to localhost or 127

jdbc:postgresql://host:5432/database?ssl=true&sslmode=require