TNS-12521: TNS:listener does not currently know of instance requested in connect descriptor
Cause: The listener received a request to establish a connection to a database or other service. The connect descriptor received by the listener specified in addition to the service name an instance name for an instance (usually a database instance) that either has not yet dynamically registered with the listener or has not been statically configured for the listener. This may be a temporary condition such as after the listener has started, but before the database instance has registered with the listener.
Action: Check to make sure that the INSTANCE_ROLE specified is correct. Run "lsnrctl services" to ensure that the instance(s) have registered with the listener and that they are ready to accept connections.
TNS-12523
Custom Search


More Oracle errors
PCC-01201Your Pro*C authorization is about to expire
ORA-06736TLI Driver: server not running
NNL-00211Cache checkpoint interval is now string
TNS-01171Event detection broke for dispatcher: string
TNS-00020INTCTL: missing NAVIGATOR_DATA in TNSNAV.ORA
TNS-00262stringstringnumber
ORA-27356invalid job argument
ORA-13776User "string" has not been granted the "SELECT" privilege on the "SQL tuning set" DBA views.
ORA-00445background process "string" did not start after string seconds
ORA-07672$PARSE_CLASS failed translating the string into a binary label
ORA-16203Unable to interpret skip procedure return values
PLS-00629PIPE statement cannot be used in non-pipelined functions
ORA-13988Invalid input given to variable argument list report function.
ORA-29291file remove operation failed
PGU-30001PGAU internal error - string
TNS-00254Navigator has been stopped
ORA-29270too many open HTTP requests
ORA-31698Error stack buffer size must be specified and must be greater than 0.
RMAN-06181multiple channels require Enterprise Edition
ORA-06576not a valid function or procedure name




TOP 20 Oracle errors
ORA-12504TNS:listener was not given the SERVICE_NAME in CONNECT_DATA
RMAN-20079full resync from primary database is not done
ORA-14411The DDL cannot be run concurrently with other DDLs
ORA-14760ADD PARTITION is not permitted on Interval partitioned objects
ORA-10877error signaled in parallel recovery slave string
ORA-32701Hang detected
ORA-00838Specified value of MEMORY_TARGET is too small, needs to be at least stringM
ORA-16665timeout waiting for the result from a database
ORA-16957SQL Analyze time limit interrupt
ORA-16664unable to receive the result from a database
RMAN-08132WARNING: cannot update recovery area reclaimable file list
ORA-00000normal, successful completion
ORA-16766Redo Apply is stopped
ORA-00837Specified value of MEMORY_TARGET greater than MEMORY_MAX_TARGET
RMAN-08137WARNING: archived log not deleted as it is still needed
DIA-48122error with opening the ADR block file [string] [string]
ORA-47988password should contain at least one numeric and one alphabetic character
IMP-00057Warning: Dump file may not contain data of all partitions of this table
ORA-00001unique constraint (string.string) violated
ORA-55508Invalid input to Flashback Transaction Backout




Your own TOP 20 Oracle errors
TNS-12521TNS:listener does not currently know of instance requested in connect descriptor