Error Ora-12154 Oracle
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server but either failed to contact the server or did not find a matching service name on that server. TNS or oracle error ora 12514 'Transparent Network Substrate' is a transport protocol that allows Oracle sessions to
Ora 12154 Oracle 9i
communicate across a network. DB Server <=> Listener <=> Network connection <=> Client (SQL*Net) <=> Application. In ora 12154 oracle 10g the path above, tnsping can be used to test the parts in bold and should be the first troubleshooting step. If tnsping fails, that generally indicates a problem finding
Oracle Ora 12154 Database Link
the server connection - if TNSNAMES specifies an IP address, is it correct?, if it's a DNS name, 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 ora 12154 oracle 11g client 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 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. - Che
while creating a linked server to Oracle ★★★★★★★★★★★★★★★ SnehadeepJune 30, 201028 0 0 0 This is one of the most common errors while creating linked server to Oracle database. Today I will discuss the reason for this error and possible
Ora 12560 Oracle
resolutions.
Full error message: OLE DB provider "MSDAORA" for linked server "LINKED_ORA"Ora 12541 Oracle
returned message "ORA-12154: TNS:could not resolve the connect identifier specified".
Msg 7303, Level 16, State 1, Line 1 Cannot initialize ora-12154 tns listener does not currently know of service requested in connect descriptor the data source object of OLE DB provider "MSDAORA" for linked server "LINKED_ORA". First of all make sure you have reviewed the following Microsoft KB article that has a lot of good information on troubleshooting http://ss64.com/ora/syntax-ora-12154.html Oracle linked server issues. How to set up and troubleshoot a linked server to an Oracle database in SQL Server http://support.microsoft.com/kb/280106 Also make sure you have installed Oracle Client on the SQL server. If the SQL server is 64 bit then we need to install 64 bit Oracle provider. You can also create linked server using Oracle ODBC driver together with Microsoft OLE DB provider for ODBC. Once again on a https://blogs.msdn.microsoft.com/dataaccesstechnologies/2010/06/30/ora-12154-tns-could-not-resolve-the-connect-identifier-specified-error-while-creating-a-linked-server-to-oracle/ 64 bit SQL server you need to install the 64-Bit OLEDB Provider for ODBC (MSDASQL) and 64 bit Oracle ODBC drivers. However 64-Bit OLEDB Provider for ODBC (MSDASQL) is already there in Windows Vista/Windows Server 2008 and later OS. This particular error message is a very general error message and can happen for quite a number of reasons. For general understanding of the error, you can review oracle documentation like this http://ora-12154.ora-code.com/ In SQL Server Linked Server, it could indicate a few things (not limited to)– 1. SQL Server (and oracle net libraries) is not able to get the TNS alias from tnsnames.ora file. 2. Something is wrong with the way the alias is created in the tnsnames.ora file (incorrect syntax) 3. TNS alias could not be resolved into a connect descriptor Below is a list of things that you can try to resolve this issue. 1. Verify that the tnsnames.ora file has the alias and the service name that the customer is using. TNS entry for the Oracle database =========================== OracleDB_Dev = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = server01.mydomain.com)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = OracleDB)Du siehst YouTube auf Deutsch. Du kannst diese Einstellung unten ändern. Learn more You're viewing YouTube in German. You can change this preference below. Schließen Ja, ich möchte sie behalten Rückgängig machen https://www.youtube.com/watch?v=QVJ1xO2V7Dc Schließen Dieses Video ist nicht verfügbar. WiedergabelisteWarteschlangeWiedergabelisteWarteschlange Alle entfernenBeenden Wird geladen... Wiedergabeliste Warteschlange __count__/__total__ How to resolve the ora 12154 error DBA Pro AbonnierenAbonniertAbo beenden1.9631 Tsd. Wird geladen... Wird geladen... https://www.datavail.com/blog/ora-12154-tnscould-not-resolve-the-connect-identifier-specified/ Wird verarbeitet... Hinzufügen Möchtest du dieses Video später noch einmal ansehen? Wenn du bei YouTube angemeldet bist, kannst du dieses Video zu einer Playlist hinzufügen. Anmelden Teilen Mehr Melden ora 12154 Möchtest du dieses Video melden? Melde dich an, um unangemessene Inhalte zu melden. Anmelden Statistik 49.740 Aufrufe 42 Dieses Video gefällt dir? Melde dich bei YouTube an, damit dein Feedback gezählt wird. Anmelden 43 17 Dieses Video gefällt dir nicht? Melde dich bei YouTube an, damit dein Feedback gezählt wird. Anmelden 18 Wird geladen... Wird geladen... Wird ora 12154 oracle geladen... Die Bewertungsfunktion ist nach Ausleihen des Videos verfügbar. Diese Funktion ist zurzeit nicht verfügbar. Bitte versuche es später erneut. Veröffentlicht am 31.01.2014In this tutorial you will learn how to resolve the ora 12145 error. Kategorie Menschen & Blogs Lizenz Standard-YouTube-Lizenz Mehr anzeigen Weniger anzeigen Wird geladen... Autoplay Wenn Autoplay aktiviert ist, wird die Wiedergabe automatisch mit einem der aktuellen Videovorschläge fortgesetzt. Nächstes Video How to Fix ORACLE 6i Error "ORA-12154: TNS:could not resolve the connect identifier specified". - Dauer: 4:02 SYED AIZAD RAZA KAZMI 3.087 Aufrufe 4:02 Oracle - Understanding the tnsnames.ora and listener.ora files - Dauer: 12:46 Chris Ostrowski 88.976 Aufrufe 12:46 ora - 12514 and ora - 12505 tns listener error fixed in 90 seconds - Dauer: 1:30 CBOT 1.621 Aufrufe 1:30 解决 Oracle ora-12514错误 - Dauer: 33:45 Maclean Liu 1.025 Aufrufe 33:45 Listener Basics For DBA - Dauer: 45:23 Satish Lodam 13.746 Aufrufe 45:23 Oracle - TNS : Protocol Adapter Error Working Solution - Dauer: 0:57 Srijit Banerjee 49.056 Aufrufe 0:57 Oracle 10g Listener and Database Creatio
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