DB to Spark Node error

When I run DB to Spark Node, I get

"ERROR DB to Spark 3:3 Execute failed: oracle/jdbc/driver/OracleDriver has been compiled by a more recent version of the Java Runtime (class file version 54.0), this version of the Java Runtime I get the error message “only recognizes class file versions up to 52.0 (UnsupportedClassVersionError)”


When connecting to the DB using “oracle connector”, the error message appears.
The knime AP version is using 4.7.1

I would appreciate it if you could tell me how to solve the problem. thank you.

Hello @ssbaek,

Can you check which version of Oracle JDBC driver you are using? There could be a mismatch of driver with Java 8.



Also after consulting with developers, here is the solution proposed by them (mainly @marvin.kickuth):

"We have further investigated the issue and it looks like the Java version on the Spark Cluster may be too old. Could you check what Java version is running there (may be version 8).

We suggest updating that Java installation or downgrading to an older driver."

Hope it helps,



As you said, I solved it by updating the java version.
Thanks for your help.

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