If I try to run any fairly simple query from the editor or Query Builder, I get the following error:
"ORA-01858: a non-numeric character was found where a numeric was expected"
Other users have no issues running the same queries
Using a 126.96.36.199 Oracle client to connect to an 11g database. Issue may be related specifically to the NLS Lang value.
Upgrade the 32-bit Oracle client to match the database version.