Error 12154 Ora-12154
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ora 12154 tns could not resolve the connect identifier specified ORA-12154: TNS could not resolve service name tipsOra 12514 Error
Question: I need help with this error: ORA-12154: TNS: could not resolve service name.Answer: The ORA-12154 is a very common ora 12154 error toad error, always related to your local copy of the tnsnames.ora file, your listener configuration and your database name aliases. Make sure that your listener is listening for the same service name that you are using.
Ora 12154 Tns Could Not Resolve Service Name
Your service name might have an alias, so check for global (world) entries and local entries. Check: $ORACLE_HOME/network/admin/tnsnames.ora Check your global_name setting with this SQL: select * from global_name; The query value should match your init.ora parms for db_name and db_domain, You can change the global_name with an ALTER DATABASE command, as follows: alter database rename global_name to xxx; Also see these notes on configuring your tnsnames.ora file and troubleshooting network error while trying to retrieve text for error ora 12154 errors. Rampant author Steve Callan notes this on the ORA-12154 error: "One of the most common errors related to improper configuration is the "ORA-12154: TNS: could not resolve service name" error. It is not uncommon for new users of Oracle to spend hours upon hours trying to figure out what their mistake is when ORA-12154 appears." The oerr utility notes this on the ORA-12154 error:: $oerr ora 12154 ORA-12154: TNS:could not resolve the connect identifier specifiedCause: A connection to a database or other service was requested using a connect identifier, and the connect identifier specified could not be resolved into a connect descriptor using one of the naming methods configured. For example, if the type of connect identifier used was a net service name then the net service name could not be found in a naming method repository, or the repository could not be located or reached. Action: The following actions may be appropriate: If you are using local naming (tnsnames.ora file): Make sure that TNSNAMES is listed as one of the values of the names.directory_path parameter in the sqlnet.ora Oracle Net profile. Verify that a tnsnames.ora file exists and is in the proper directory and is accessible. Check that the net service name used as the c
server but either failed to contact the server or did not find a matching service name on that server. TNS or 'Transparent Network Substrate' is a transport protocol that allows
Ora 12154 Error In Oracle
Oracle sessions to communicate across a network. DB Server <=> Listener <=> Network
Error Ora 12560
connection <=> Client (SQL*Net) <=> Application. In the path above, tnsping can be used to test the parts in bold ora 12154 error in oracle 11g and should be the first troubleshooting step. If tnsping fails, that generally indicates a problem finding the server connection - if TNSNAMES specifies an IP address, is it correct?, if it's a DNS name, http://www.dba-oracle.com/t_ora_12154_tns_resolve_service_name.htm is that resolving correctly? (try switching for an IP address to find out.) If tnsping succeeds, that can indicate a problem with the client configuration but could equally be that the connection is working as far as the listener but the database is down. Try comparing with another PC - if multiple machines are failing that usually points towards a server issue. Ora-12154 can be a tricky http://ss64.com/ora/syntax-ora-12154.html problem to nail down because there are many possible causes, try making a connection directly on the server or completely regenerate the TNSNAMES.ORA file on the client. ORA-12154 description: Cause: A connection to a database or other service was requested using a connect identifier, and the connect identifier specified could not be resolved into a connect descriptor using one of the naming methods configured. For example, if the type of connect identifier used was a net service name then the net service name could not be found in a naming method repository, or the repository could not be located or reached. Action: Local naming (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. - 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 can make it unusable. Directory Naming: - Verify that "LDAP" is listed as
a unique format. Though the TNSNames.ora file may not always be required. For instance, if you have installed only the Tableau-provided Oracle files and do not have http://kb.tableau.com/articles/knowledgebase/oracle-connection-errors a stand-alone Oracle client. The Oracle error messages refer to the TNSNames.ora file. Typically, correcting route or naming syntax in the Advanced Oracle Connection dialog box or using your https://www.youtube.com/watch?v=QVJ1xO2V7Dc full .WORLD database name resolves most Oracle connection issues. If your connection error requires more troubleshooting, refer to the four common connection errors listed below. ORA-03113: end-of-file on communication channelORA-12154: ora 12154 TNS: could not resolve the connect identifier specified HOST value incorrect or Global name incorrect or unknownORA-12514: TNS listener does not currently know of service requested in connect descriptorSERVICE value incorrectORA-12541: TNS: no listenerPORT value incorrectORA-00932: inconsistent data types ORA-03113: end-of-file on communication channel ORA-03113 is a catch-all type error for any problem interrupting an Oracle session. There can be numerous ora 12154 error causes for this error. Please refer to the list below for some troubleshooting guidance. Refer to Oracle documentation specific to this error: My Oracle Support.Refer to Oracle's B Troubleshooting Common Errors page.Oracle recommends that you check for network problems and review the SQL*Net setup.If you're connecting to Oracle 9.2.0.5, in many cases the primary cause of this error is Oracle bug 3010227. Ask your Oracle database administrator to apply Oracle patch 9.2.0.6 or another patch appropriate for your server. Set the Oracle initialization parameter 'STAR_TRANSFORMATION_ENABLED' to FALSE.Alternatively, if you would like to test this issue further follow the optional procedure listed below. Step 1 From the Tableau Desktop start page, select Connect to Data. Step 2 For Tableau Desktop 8.2 and later, on the Connect page, click Oracle. For Tableau Desktop 8.1 and earlier, on the Connect to Data page, click Oracle. Step 3 For Tableau Desktop 8.2 and later, connect to the Oracle server, and then click OK. For Tableau Desktop 8.1 and earlier, follow the steps in the Oracle Connection dialog box to complete the co
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