ORA-12516: TNS:listener could not find available handler with matching protocol

ORA-1251
ORA-12516: TNS:listener could not find available handler with matching protocol
stack
Cause: None of the known and available service handlers for the given SERVICE_
NAME support the client"s protocol stack: transport, session, and presentation
protocols.
Action: Check to make sure that the service handlers (e.g. dispatchers) for the
given SERVICE_NAME are registered with the listener, are accepting connections,
and that they are properly configured to support the desired protocols.
More details : Viste http://www.high-oracle.com/ora-1251/
More details : Viste http://www.high-oracle.com/ora-1251/
-------------------------------------------------------

-------------------------------------------------------
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-15115: missing or invalid ASM disk size specifier
ORA-12022: materialized view log on ""."" already has rowid
ORA-23487: object groups ""."" and ""."" do not have the same
ORA-26028: index . initially in unusable state
ORA-16047: DGID mismatch between destination setting and standby
ORA-16124: transaction is waiting on another transaction
ORA-22630: attribute [] is null or it is not well-formed
ORA-01486: size of array element is too large
ORA-02720: osnfop: shmat failed
ORA-02477: can not perform parallel direct load on object
ORA-01852: seconds must be between 0 and 59
ORA-12234: TNS:Redirect to destination
ORA-02245: invalid ROLLBACK SEGMENT name
ORA-14188: sub-partitioning columns must form a subset of key columns
ORA-16626: failed to enable specified object
ORA-26564: argument is not of specified type
ORA-31066: Insertion of into creates a cycle
ORA-01164: MAXLOGFILES may not exceed
ORA-30395: dimension options require the COMPATIBLE parameter to be or
ORA-12533: TNS:illegal ADDRESS parameters
-------------------------------------------------------
Error Oracle : ora-09954 http://www.high-oracle.com/ora-09954/
Error Oracle : ora-13605 http://www.high-oracle.com/ora-13605/
Error Oracle : ora-01654 http://www.high-oracle.com/ora-01654/
Error Oracle : ora-09886 http://www.high-oracle.com/ora-09886/
Error Oracle : ora-01093 http://www.high-oracle.com/ora-01093/
Error Oracle : ora-13637 http://www.high-oracle.com/ora-13637/
Error Oracle : ora-16738 http://www.high-oracle.com/ora-16738/
Error Oracle : ora-31492 http://www.high-oracle.com/ora-31492/
Error Oracle : ora-12630 http://www.high-oracle.com/ora-12630/
Error Oracle : ora-16509 http://www.high-oracle.com/ora-16509/
Error Oracle : ora-06268 http://www.high-oracle.com/ora-06268/
Error Oracle : ora-27040 http://www.high-oracle.com/ora-27040/
Error Oracle : ora-31112 http://www.high-oracle.com/ora-31112/
Error Oracle : ora-29546 http://www.high-oracle.com/ora-29546/
Error Oracle : ora-19851 http://www.high-oracle.com/ora-19851/
Error Oracle : ora-06420 http://www.high-oracle.com/ora-06420/
Error Oracle : ora-22601 http://www.high-oracle.com/ora-22601/
Error Oracle : ora-01160 http://www.high-oracle.com/ora-01160/
Error Oracle : ora-01495 http://www.high-oracle.com/ora-01495/
Error Oracle : ora-01116 http://www.high-oracle.com/ora-01116/
-------------------------------------------------------
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/
-------------------------------------------------------