Problem with LOB's requiring OCI8 mode

[Paul B]

I am using PL/SQL Developer 5.1.0.654 which shows usage of OCI: Version 8.1. On another machine, am using 5.1.4.729 which also shows usage of OCI: Version 8.1. Both of these machines are working against a local Oracle 9.2.0.4 Enterprise instance.

When performing a query that returns a CLOB, I receive the following PL/SQL Developer error message: "A query with LOB's requires OCI8 mode, but OCI7 mode is used."

I attempted to change the "Force OCI7 mode on OCI8" preference (Tools > Preferences > Options tab page) and restart the application, but either set or unset, I still received the error.
Any ideas?

 

[Marco Kalter]

If I'm not mistaken this can only happen if the "Force OCI7 on OCI8 mode" preference is set, but you mention that this does not matter.

Can you go to Help > About, press the 'Info' button, press the 'Copy all pages' button on this info screen, and paste this text into an e-mail reply?