I have problem with logging into my database using Pl/SQL Developer. All connection parameters are defined in TNSNAMES.ORA and work perfectly with SQL Developer.

Unfortunately, when I try to connect using PL/SQL Developer, I am receiving a message with no content. I am using version 9.0.6.1665.

Is this a known issue and what might I be doing wrong?

Here is image of this strange error:

enter image description here

oracle-database plsqldeveloper
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