I already read Why do I get java.lang.AbstractMethodError when trying to load a blob in the db?, downloaded all of the 11g jdbc drivers I could find, and added them as libr
As others have said this is due to an older Oracle JDBC driver.
In my case replacing ojdbc14.jar (Oracle JDBC driver 10.1.0.5.0) with ojdbc16.jar (Oracle JDBC driver 11.2.0.4.0) fixed the problem.
ojdbc14.jar
ojdbc16.jar