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

import java.util.Properties; ... Properties props = new Properties(); props.setProperty("logLevel", "1"); // Oracle props.setProperty("loggerLevel", "DEBUG"); // PostgreSQL driver

Using an unsupported or corrupted JDBC driver version (e.g., specific issues have been documented with IBM JCC JDBC driver version 4.33.31 when using DB2 Trusted Context).

Use the correct service name, not SID if using multi-tenant: import java

Check the XQE log files (found in the Cognos install directory under ..\logs\xqe

: Using an unsupported version of a JDBC driver, such as the IBM JCC JDBC driver version 4.33.31 , can cause connections to fail when using specific features like Trusted Contexts. Check if the database has reached max_connections :

Check if the database has reached max_connections :

Thus, the error translates to: The query execution engine, using JDBC, failed to open a network socket or handshake with the target database server. ... Properties props = new Properties()

Ensure the correct JDBC driver file (e.g., sqljdbc4.jar for SQL Server) is located in the ..\webapps\p2pd\WEB-INF\lib or the designated ..\drivers folder. Restart the Cognos service after adding or updating drivers to apply changes.