Symptoms: 

The latest versions of data drivers fix two issues for Oracle 12c. They are described at the following locations:

• http://knowledgebase.progress.com/articles/Article/Hang-condition-occurs-retrieving-records-on-Oracle-12-2-0-2-with-the-Connect-for-JDBC-Oracle-driver?q=oracle+12&l=en_US&fs=Search&pn=1
• http://knowledgebase.progress.com/articles/Article/000053547?q=Operation+cancelled+by+user+request&l=en_US&fs=Search&pn=1

Please back up your existing data drivers (wsoracledd-5-1-3.jar and wssqlserverdd-5-1-2.jar) and copy the latest data drivers (available on FTP) to the application. The latest versions are:  

• Microsoft SQL Server JDBC 5.1.4
• Oracle JDBC 5.1.4

Resolution: 

You can fix this issue by deploying the update to WorldServer 10.4.5, available on FTP.

If you cannot deploy it, contact the SDL Support Team:

•     Log on to your "My SDL" Account.
•     Log a support request via Support & Education Support. 

Notes: 

• All systems running WorldServer 10.4.5 and using Oracle 12c should have this hotfix applied.
• The fix for this issue is also available in WS 11.1.1.