This is an Oracle Database Server Message. This can be generated by the Oracle Database when running any Oracle program.
This is in general the very first error message you get when you try to establish a connection to your oracle database. Often, it's a typographical error in your connexion string or in your tnsnames.ora file.
- Make sure that "TNSNAMES" is listed as one of the values of the NAMES.DIRECTORY_PATH parameter in the Oracle Net profile (SQLNET.ORA)
- Verify that a TNSNAMES.ORA file exists and is in the proper directory and is accessible (general tnsnames.ora location is: $ORACLE_HOME/network/admin/tnsnames.ora).
- Check that the net service name used as the connect identifier exists in the TNSNAMES.ORA file.
- Make sure there are no syntax errors anywhere in the TNSNAMES.ORA file. Look for unmatched parentheses or stray characters. Errors in a TNSNAMES.ORA file may make it unusable.
- Verify that "LDAP" is listed as one of the values of the NAMES.DIRETORY_PATH parameter in the Oracle Net profile (SQLNET.ORA).
- Verify that the LDAP directory server is up and that it is accessible.
- Verify that the net service name or database name used as the connect identifier is configured in the directory.
- Verify that the default context being used is correct by specifying a fully qualified net service name or a full LDAP DN as the connect identifier
- Verify that "EZCONNECT" is listed as one of the values of the NAMES.DIRETORY_PATH parameter in the Oracle Net profile (SQLNET.ORA).
- Make sure the host, port and service name specified are correct.
- Try enclosing the connect identifier in quote marks. See the Oracle Net Services Administrators Guide or the Oracle operating system specific guide for more information on naming.
jdogg1807 [2015-06-16 20:42:46]How exactly do i do the following? Make sure that "TNSNAMES" is listed as one of the values of the NAMES.DIRECTORY_PATH parameter in the Oracle Net profile (SQLNET.ORA)
X-DBA [2015-06-16 22:48:56]@jdogg1807 In the file SQLNET.ORA (This file can be found in the %ORACLE_HOME%\NETWORK\ADMIN directory), verify that the parameter NAMES.DIRECTORY_PATH contains the naming methods "TNSNAMES" that are used when a client tries to connect to a database.
Possible values for this parameter are : TNSNAMES, LDAP, HOSTNAME, EZCONNECT, ...
Example :NAMES.DIRECTORY_PATH= (TNSNAMES, LDAP, HOSTNAME) TRACE_LEVEL_CLIENT = OFF SQLNET.EXPIRE_TIME = 30 ...Oracle description of NAMES.DIRECTORY_PATH parameter can be found here:
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