While connecting to one of the dev database I am getting
following error:-
ORA-00257: archiver error. Connect internal only, until freed.
But when i am checking as sys user there is no archive desination
defined in the db.I mean log_archive_dest locations have not
been given any value.Where can I check Archive destination in
this scenario.Is there any default place where oracle stores
archive logs incase log_archive_dest is not given any value.

ORA-00257: archiver error. Connect internal only, until freed.
 *Cause:  The archiver process received an error while trying to archive
         a redo log.  If the problem is not resolved soon, the database
         will stop executing transactions. The most likely cause of this
         message is the destination device is out of space to store the
         redo log file.
 *Action:  Check archiver trace file for a detailed description
          of the problem. Also verify that the
         device specified in the initialization parameter
         ARCHIVE_LOG_DEST is set up properly for archiving