When trying to connect to an Oracle 7.3.4 database using a 9i client, TOAD 8.5 will not allow the connection and will prompt an error stating:
"Connections to Oracle 7 require Oracle 8.1.7 clients or older."
TOAD's script engine has been updated to reflect behavior similar to Oracle.
WORKAROUND:
Use an older Oracle Client version to connect (Oracle 8.1.7 clients or older).
STATUS:
This issue has been added to the list of enhancements for a future release.