Exception while calling stored procedure :Bigger type length than Maximum

HI I am getting this exception when I am calling any stored procedure from my J2EE app.

Exception while calling stored procedure :Bigger type length than Maximum

I am having Oracle 9.1.0.7, JDK1.4 and using ojdbc14.jar running on Weblogic 8.1

Please advise what could be the root cause ?

Below is the manifest of my ojdbc14.jar

Manifest-Version: 1.0
Implementation-Version: "Oracle JDBC Driver version – 10.1.0.2.0"
Specification-Title: "Oracle JDBC driver classes for use with JDK1.4"
Specification-Version: "Oracle JDBC Driver version – 10.1.0.2.0"
Implementation-Title: "ojdbc14.jar"
Created-By: 1.2.2 (Sun Microsystems Inc.)
Implementation-Time: "Wed Jan 21 00:48:12 2004"
Implementation-Vendor: "Oracle Corporation"
Specification-Vendor: "Oracle Corporation".