This technote provides a defect tracking number for ClassCastException exception when trying to datapool port numbers on IBM® Rational® Performance Tester (RPT).
RPT would raise this error when trying to datapool port numbers in an HTTP test:
“Experienced severe error java.lang.ClassCastException: java.lang.String incompatible with java.lang.Integer:"
Resolving the problem
This issue has been identified as a product defect under APAR PK63185.