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Troubleshooting: JDBC Data Source test fails during installation (WebSphere)

Updated on August 28, 2019


During installation, when testing the JDBC Data Source connection in WebSphere, the following error occurs:

Test connection failed for datasource datasourcename on server servername at node nodename with the following exception: java.lang.Exception: java.sql.SQLException: Microsoft SQLServer 2000 Driver for JDBC SQL Server
Login failed for user '(null)'. Reason:

data sources



The issue here is not that a user was not defined, but that the system doesn't know that a user was defined, as a restart of the server is required for the system to read that information.  

  • Log out of the Administrative Console
  • Stop the WebSphere server. 
  • Restart the server
  • Log into the Administrative Console again, and try the Test Connection again.

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