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ORA-12519: TNS:no appropriate service handler found




Due to maximum number of sessions exceeded in XXXX database. Hence we have received the following error.


ORA-12519: TNS:no appropriate service handler found

Solution:

 Seems the number of processes parameter value less. Its unable to create new session. Because its reached maximum sessions. Please check like below.

 SQL> select * from v$resource_limit where RESOURCE_NAME in ('sessions','processes','transactions');
RESOURCE_NAME                  CURRENT_UTILIZATION      MAX_UTILIZATION         INITIAL_ALLOCATION             LIMIT_VALUE
----------------------         -------------------   ---------------------    -----------------------   ------------------------------
processes                             177                    180                        180                         180
sessions                              198                    203                        203                         203



Close the unwanted sessions (OR)  increase the PROCESSESS parameter value.

Thank You!
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