This wait occurs when there is an unhandled exception in the SQL or PL/SQL code that is being run and en error is being raised. Each error counts as two waits. One for break and the other one for reset.
When using a database link that goes through Oracle Gateways to another vendor database (like SQL Server) you might get an error in SQL Developer that says “Bigger type length than Maximum”. Apparently this is a bug in thin JDBC driver. Workaround is to use thick/OCI driver. Select it in preferences and use TNS to … Read more SQL Developer and database links through Oracle Gateways