ORA-09957: Unable to send termination request to IMON

ORA-09957
ORA-09957: Unable to send termination request to IMON
Cause: The attempt to send a termination signal to IMON failed.
Action: This is an internal error, contact ORACLE support.
More details : Viste http://www.high-oracle.com/ora-09957/
More details : Viste http://www.high-oracle.com/ora-09957/
-------------------------------------------------------

-------------------------------------------------------
Viste our Support Blog : http://updatefun.blogspot.fr/
Viste our Support Blog : http://oracleerrormsgs.blogspot.fr/
Viste our Support Blog : http://oracleerror1.blogspot.fr/
Viste our Support Blog : http://supports-oracle.blogspot.com/
Viste our Support Blog : http://oracleerrorcodelist.blogspot.fr/
Viste our Support Blog : http://all-dba-support.blogspot.fr/
Viste our Support Blog : http://my-support-oracle.blogspot.fr/
-------------------------------------------------------

Your source for help on all Oracle database error codes :
------------------------
ORA-24300: bad value for mode
ORA-28040: No matching authentication protocol
ORA-19273: XQ0053 - empty string in namespace declaration
ORA-00445: background process "" did not start after seconds
ORA-00267: name of archived log file not needed
ORA-12690: Server Authentication failed, login cancelled
ORA-01313: LogMiner dictionary column type different from specified
ORA-32021: parameter value longer than characters
ORA-07393: unable to delete text file
ORA-12504: TNS:listener was not given the SID in CONNECT_DATA
ORA-01973: Missing change number
ORA-06912: CMX: write error in datarq
ORA-03235: max # extents () reached in table . subpartition
ORA-16232: adding Logical Standby skip entry for table .
ORA-30680: debugger connection handshake failed
ORA-12595: TNS:no confirmation
ORA-24912: Listener thread failed.
ORA-06801: TLI Driver: listen for SPX server reconnect failed
ORA-27506: IPC error connecting to a port
ORA-04933: initial service identifier is non-zero
-------------------------------------------------------
Error Oracle : ora-19502 http://www.high-oracle.com/ora-19502/
Error Oracle : ora-10566 http://www.high-oracle.com/ora-10566/
Error Oracle : ora-32614 http://www.high-oracle.com/ora-32614/
Error Oracle : ora-12921 http://www.high-oracle.com/ora-12921/
Error Oracle : ora-28511 http://www.high-oracle.com/ora-28511/
Error Oracle : ora-28533 http://www.high-oracle.com/ora-28533/
Error Oracle : ora-12324 http://www.high-oracle.com/ora-12324/
Error Oracle : ora-32144 http://www.high-oracle.com/ora-32144/
Error Oracle : ora-02067 http://www.high-oracle.com/ora-02067/
Error Oracle : ora-06925 http://www.high-oracle.com/ora-06925/
Error Oracle : ora-19005 http://www.high-oracle.com/ora-19005/
Error Oracle : ora-31441 http://www.high-oracle.com/ora-31441/
Error Oracle : ora-22865 http://www.high-oracle.com/ora-22865/
Error Oracle : ora-12602 http://www.high-oracle.com/ora-12602/
Error Oracle : ora-27192 http://www.high-oracle.com/ora-27192/
Error Oracle : ora-25248 http://www.high-oracle.com/ora-25248/
Error Oracle : ora-28539 http://www.high-oracle.com/ora-28539/
Error Oracle : ora-13515 http://www.high-oracle.com/ora-13515/
Error Oracle : ora-09870 http://www.high-oracle.com/ora-09870/
Error Oracle : ora-24093 http://www.high-oracle.com/ora-24093/
-------------------------------------------------------
Viste our Support Blog : http://updatefun.blogspot.fr/
Viste our Support Blog : http://oracleerrormsgs.blogspot.fr/
Viste our Support Blog : http://oracleerror1.blogspot.fr/
Viste our Support Blog : http://oracleerrorcodelist.blogspot.fr/
Viste our Support Blog : http://all-dba-support.blogspot.fr/
Viste our Support Blog : http://my-support-oracle.blogspot.fr/
-------------------------------------------------------