This will be the exception to be seen when integrating WLS10.3 and Quartz.
org.quartz.JobPersistenceException: Couldn't store job: Driver's Blob representation is of an unsupported type:
weblogic.jdbc.wrapper.Blob_oracle_sql_BLOB [See nested exception: java.sql.SQLException: Driver's Blob representation is of an unsupported type: weblogic.jdbc.wrapper.Blob_oracle_sql_BLOB]
Solution
Use the WeblogicOracleDelegate driver delegate in your config
org.quartz.jobStore.driverDelegateClass =org.quartz.impl.jdbcjobstore.oracle.WebLogicOracleDelegate (for Oracle drivers used within Weblogic)
Problem solved.
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