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SQL Developer 20: Connection Tests fail due to illegal character ":"

in Database Utilities (MOSC) 1 commentAnswered ✓

We have been using a 3rd pary SQL tool so far and are trying to use SQL developer now.

OS: MS Windows 10 Enterprise

SQL Develeper 20 (with JRE included)

Client: Oracle v19, x64 (but before there was a v11 x86 installed on that client, see below

Now, when trying to connect to the Oracle database server, we get an error message saying:

Illegal char <:> at index 53: C:\Oracle.x64\product\19.0.0\client_1\network\admin;C:\Oracle\Product\11.2.0\Client_1\network\admin\ojdbc.properties

The index 53 refers to to the ":" between the 2 paths, and the 2nd half "C:\Oracle\Product\11.2.0..." is the old Oracle client's path. If I only knew where SQL developer retrieves that old 2 paths from, I think I could simply cut of the 2nd half that is anyway no longer needed as the old client is no longer in use (and its registry keys have been renamed, the folder names also).

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