java.lang.ClassCastException: oracle.sql.BLOB cannot be cast to oracle.sql.BLOB

Question

I have problem retrieving a blob object from oracle DB to java API with jdbc. The problem is when I execute a Collable statement with a function from the db which return me

Answer 1

I got this error while generating a jasper report.

I replaced the class=oracle.jdbc.OracleBlob with class=java.sql.Blob in the jrxml file of that report. It worked for me.