Web Reference: SQL Developer Help Center Connection errors, authentication problems, or just trying to get your data exported? We've got fixes and step-by-step guides for all of it. Oct 6, 2023 · In my course they are asking us to go on to sql developer (they're using 19 with desktop sql developer,) so I opened the SQL developer link on the web page http://localhost:8080/ords/sql-developer, put username HR and password oracle as the pop up window said. Aug 9, 2016 · In my case the issue was likely caused by initially downloading the SQL Developer version that included the JDK - which did not work as expected. I later downloaded the version without the JDK and installed JDK separately.
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