No mapping for the Unicode character exists in the target multi-byte code page.

Toad for Oracle
1

Every time I try to connect to a schema or close a connection, I will get this error message popup “No mapping for the Unicode character exists in the target multi-byte code page.”

And when I don’t receive this error message, my Toad becomes not responsive. The error message is the blocker, I can’t make connection or disconnection without clicking on the error message.

My machine is Windows 10 version 1607 build 14393.2068

2

Best if you could open a Support ticket with our Engineers, but until then, I’m wondering if this issue is caused by corrupted files (somehow) when you imported user files from a previous version of Toad.

See, for example, a similar issue here:

https://support.quest.com/toad-for-oracle/kb/234511/importing-user-files-causes-an-error-in-toad-for-oracle-12-12