ORA-12527: TNS:listener: all instances are in restricted
mode or blocking new connections



ORA-12527: TNS:listener: all instances are in restricted mode or blocking new connections..

Answer / guest

Cause: All appropriate database instances supporting the
service requested by the client reported that they either
were in restricted mode or were blocking the new
connections. The Listener does not allow connections to such
instances. This condition may be temporary, such as at
instance startup.

Action: Attempt the connection again. If error persists,
then contact the database administrator to check the status
of the instances.

Please add more information about this Error

Is This Answer Correct ?    1 Yes 0 No

Post New Answer

More Oracle Errors Interview Questions

ORA-15101: no action specified

1 Answers  


TNS-01114: LSNRCTL could not perform local OS authentication with the listener

1 Answers  


ORA-22972: NULL value not allowed in PRIMARY KEY-based object identifier

1 Answers  


ORA-16614: object has an ancestor that is disabled

1 Answers  


ORA-04086: trigger description too long, move comments into triggering code

1 Answers  






LPX-00235: invalid XML version, must be 1.0 or 2.0

1 Answers  


UDE-00005: unexpected End-Of-File encountered while reading input

1 Answers  


LPX-00237: invalid condition section keyword, must be INCLUDE or IGNORE

1 Answers  


ORA-16412: ONDEMAND archival requires active SQL apply operation

1 Answers  


ORA-28584: heterogeneous apply internal error

1 Answers  


NNO-00317: statistic counter reset interval changed to number seconds

1 Answers  


AUD-00802: name of index is limited to 22 characters

1 Answers  


Categories