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The link you posted points to an "old" version of SQL Developer documentation.
See if this helps:
You can get to the latest SQL Developer documentation via:
SQL Developer 17.4.1
Version 17.4.1.054.0712 March 7, 2018
This issue occurs because the TimesTen JDBC driver is a JDBC / ODBC bridge and so the JVM needs to be able to find and load the TimesTen native libraries (DLLs on Windows). There are two ways to fix this:
1. Add the <TimesTen_install_dir>\bin directory to the *system* PATH variable (this is done automatically if you r=tick the 'register environment variables' check box when installing TimesTen, though you may need to reboot for that change to properly take effect.
2. In the SQL Developer 'product.conf' file, add the directive:
thanks for reply .