Troubleshooting
Problem
Dremio version 25 introduced breaking changes that prevent it being loaded by the Java 8 run time in Cognos Analytics (12.x and 11.2.4.x).
Exception in thread "main" java.lang.UnsupportedClassVersionError: JVMCFRE199E bad major version 55.0 of class=com/dremio/jdbc/Driver, the maximum supported major version is 52.0; offset=6
at java.lang.ClassLoader.defineClassInternal(ClassLoader.java:397)
at java.lang.ClassLoader.defineClass(ClassLoader.java:358)
Cause
A copy of the Dremio version 25 JDBC driver has been placed in the <cognos>\drivers folder.
Resolving The Problem
Replace the Dremio version 25 JDBC driver with version 24.x.
Cognos Analytics supported environment pages provides details on Dremio JDBC drivers that can be used.
Cognos Analytics supported environment pages provides details on Dremio JDBC drivers that can be used.
Document Location
Worldwide
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Document Information
Modified date:
06 May 2025
UID
ibm17149201