Introduction
You might face a sqldeveloper error while working on a Windows environment related to timezone, installing Oracle sqldeveloper 64bit edition on Windows 7 64 bit.
Background
For accessing an Oracle database you need to have the right tools. Oracle has provided developers with a solid tool (sqldeveloper 3.1), you will face no installation issues but when executing a query, you will get the timezone error.
Solution
SQL Server Developer:
Edit this config file: C:\Program Files\sqldeveloper 3\sqldeveloper\bin\sqldeveloper.conf then add this line anywhere in the file:
AddVMOption -Duser.timezone="+02:00" (My time zone)
Oracle Data Modeler
Edit this config file: C:\Program Files\datamodeler 3\datamodeler\bin\datamodeler.conf, then add this line anywhere in the file:
AddVMOption -Duser.timezone="+02:00" (My time zone)
