Already read all the question related to this error, but couldnt resolve the issue.
As of yesterday, the oracle SMALLWORLD service has stopped working and the error is
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
the following are the system information to better understand the situation:
LISTENER.ORA content :Listener.ora
TNSNAMES.ORA content :TNSNAMES.ORA
SQLNET.ORA content :SQLNET.ORA CONTENT
the following is the result of
LSNRCTL SERVICES
command.
as you can see the service name ATTACHMENTDB is recognisable, but service SMALLWORLD is not.
while trying to logon with sysdba, the result is
ORA-01017 invalid user name/password; logon denied
while trying to logon with SYSTEM user, the result is
ORA-01034 : ORACLE not available
and
ORA-27101 : shared memory realm does not exist
below image, is the result of SQLPLUS /NOLOG command
i already tried stopping and starting the ORACLE services and the Listener in the SERVICES.MSC, but nothing worked. i don't understand why ATTACHMENTDB service works but not the SMALLWORLD service.
any hint appreciated.