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CWSIS1524E: Data source, jdbc/<datasource name> not found

Troubleshooting


Problem

While starting the Messaging Engine in a standalone server or during the failover of the Messaging Engine in a WebSphere Application Server (WAS) cluster you see this generic error: CWSIS1524E

Symptom

In the SystemOut.log you see this error message:

SibMessage E CWSIS0002E: The messaging engine encountered an exception while starting. Exception: com.ibm.ws.sib.msgstore.MessageStoreRuntimeException: CWSIS1524E: Data
source, <data source> not found.

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Document Information

Modified date:
12 September 2025

UID

swg21624732