Error while executing a query in sql developer.

Question

I am trying to execute a query on the connected instance and getting the following error.

SEVERE 70 53918 oracle.dbtools.worksheet.sqlhistory.SqlHistoryTask oracle.dbtools.worksheet.sqlhistory.db.HistoryDB.readHistory(HistoryDB.java:99)

I am using Oracle 12g database system.

Answer 1

This happens whenever the history files are curropted.

1. Close your Sql Developer running instance if any.
2. In windows go to folder C:\Users\XXXXXX\AppData\Roaming\SQL Developer\SqlHistory and rename SqlHistory folder.
   Restart your Sql Developer, errors must be gone by now.