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connect to the appropriate Oracle database, we'll need to expound a bit on how Oracle behaves and, therefore, what is causing this issue in the first place. SIDs vs SERVICE_NAMES It is important to understand ora 12505 error in sql developer the (slight) difference between what Oracle defines as a SID compared to a

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SERVICE_NAME, as we'll use this information to create a proper connection string later on. In Oracle, the system identifier (or SID)

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is a local identifier of up to eight characters in length that is used to identify a particular database and differentiate it from other databases on the system. Often the SID is the prefix

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word or DB_UNIQUE_NAME that precedes the DB_DOMAIN. For example, the SID of our bookstore database, as seen in in the full global database name of bookstore.company.com. SERVICE_NAMES, on the other hand, represent the names by which database instances can be connected to. A SERVICE_NAME will typically follow the format of the SID followed by the database domain, like so: DB_UNIQUE_NAME.DB_DOMAIN The TNS Listener When a client is attempting to ora 12505 error in oracle 12c connect to an Oracle database, rather than connecting to the database directly, there is a broker service that intervenes and handles the connection request for the client. This broker application is known as the listener and it performs the task of listening for incoming client requests. When a request is received, the listener processes and forwards that request onto the appropriate Oracle database server using a service handler, which just acts as the connection between the listener and the database server. TNS Names and Configuration When connecting to an Oracle database, typically your database server will have tnsnames.ora, which is a configuration file that informs the server about NET_SERVICE_NAMES which are valid database connections. By default, this file is located at ORACLE_HOME/network/admin. For example, a NET_SERVICE_NAME descriptor in tnsnames.ora may be formatted like this: myDatabaseNetService = (DESCRIPTION = (ADDRESS = (PROTOCOL = tcp)(HOST = localhost)(PORT = 1521)(QUEUESIZE = 100)) (CONNECT_DATA = (SERVICE_NAME = bookstore.company.com) ) ) This would define a NET_SERVICE_NAME using the SERVICE_NAME we discussed earlier (bookstore.company.com) and connecting to localhost through port 1521. Connection String With a bit more knowledge about how Oracle actually connects to databases, we can now look at how connection strings are formatted. Connect via TNS Name/NET_SERVICE_NAME

incorrectly. Action: Turn on tracing at the ADMIN level and reexecute the operation. Verify that the ORACLE ora-12505 jdbc thin client Server executable is present and has execute permissions enabled. Ensure that listener refused the connection with the following error ora-12519 the ORACLE environment is specified correctly in LISTENER.ORA. The Oracle Protocol Adapter that is being called may listener refused the connection with the following error ora-12528 not be installed on the local hard drive. Please check that the correct Protocol Adapter are successfully linked. If error persists, contact Oracle Customer Support. ORA-12502: TNS:listener https://chartio.com/resources/tutorials/how-to-fix-ora-12505-tns-listener-does-not-currently-know-of-sid-given-in-connect-descriptor received no CONNECT_DATA from client Cause: No CONNECT_DATA was passed to the listener. Action: Check that the service name resolved from TNSNAMES.ORA has the CONNECT_DATA component of the connect descriptor. ORA-12504: TNS:listener was not given the SID in CONNECT_DATA Cause: The SID was missing from the CONNECT_DATA. Action: Check that the connect descriptor corresponding https://docs.oracle.com/cd/B19306_01/server.102/b14219/net12500.htm to the service name in TNSNAMES.ORA has an SID component in the CONNECT_DATA. ORA-12505: TNS:listener does not currently know of SID given 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 a SID 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: - Wait a moment and try to connect a second time. - Check which instances are currently known by the listener by executing: lsnrctl services - Check that the SID parameter in the connect descriptor specifies an instance known by the listener. - Check for an event in the listener.log file. ORA-12508: TNS:listener could not resolve the COMMAND

does not currently know of SID given in connect descriptor INNo MATHs SubscribeSubscribedUnsubscribe145145 Loading... Loading... Working... Add to Want to watch this again later? Sign in to add this video to a https://www.youtube.com/watch?v=vNJ7x_R7vN8 playlist. Sign in Share More Report Need to report the video? Sign in to report inappropriate content. Sign in Statistics 25,574 views 160 Like this video? Sign in to make http://www.dba-oracle.com/sf_ora_12505_tns_listener_does_not_currently_know_of_sid_given_in_connect_descriptor.htm your opinion count. Sign in 161 6 Don't like this video? Sign in to make your opinion count. Sign in 7 Loading... Loading... Loading... Rating is available when the video has listener refused been rented. This feature is not available right now. Please try again later. Published on Nov 27, 2015solution of error:Status : Failure -Test failed: Listener refused the connection with the following error:ORA-12505, TNS:listener does not currently know of SID given in connect descriptor Category Education License Standard YouTube License Show more Show less Loading... Advertisement Autoplay When autoplay is enabled, a listener refused the suggested video will automatically play next. Up next Oracle - Understanding the tnsnames.ora and listener.ora files - Duration: 12:46. Chris Ostrowski 91,272 views 12:46 Resolved: The Network Adapter could not establish the connection - Duration: 9:36. daniele perrotta 31,335 views 9:36 How to fix error ORA-12505 - Duration: 6:03. Nguyễn Văn Thân 727 views 6:03 Create new connection with new user in Oracle SQL Developer - Duration: 10:28. Chitu Okoli 99,005 views 10:28 Oracle: fixed errors 17002 and 12505 - Duration: 2:52. Integral 1,055 views 2:52 Oracle Database 11g XE (Express Edition) Install guide and connect with SQL Developer - Duration: 18:16. MyOnlineEdu.com 70,231 views 18:16 How to know your oracle SID name - Duration: 7:15. Oracle Database 412 views 7:15 Introduction to Oracle Listener - Duration: 16:41. ORACLEGENESIS 2,787 views 16:41 how to fix ORA-12560 TNS:protocol adapter error ? - Duration: 4:12. Programming World 5,581 views 4:12 How to resolve the ora 12154 error - Duration: 7:03. DBA Pro 49,006 views 7:03 ora - 12514 and ora - 12505 tns listener error fixed in 90 seconds ✅ - Duration: 1:

SQL TuningSecurityOracle UNIXOracle LinuxMonitoringRemote supportRemote plansRemote servicesApplication Server ApplicationsOracle FormsOracle PortalApp UpgradesSQL ServerOracle ConceptsSoftware SupportRemote Support Development Implementation Consulting StaffConsulting PricesHelp Wanted! Oracle PostersOracle Books Oracle Scripts Ion Excel-DB Don Burleson Blog

ORA-12505: TNS: listener does not currently know of SID given in connect descriptortips Oracle Error Tips by Burleson Consulting The Oracle oerr utility note this about ORA-12505: ORA-12505: TNS: listener does not currently know of SID given 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 a SID 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: - Wait a moment and try to connect a second time. - Check which instances are currently known by the listener by executing: lsnrctl services - Check that the SID parameter in the connect descriptor specifies an instance known by the listener. - Check for an event in the listener.log file. A widely seen situation with ORA-12505 concerns "JDBC Thin Connection Confusion between Service and SID Results in ORA-12505" This issue is seen in version 11.5.10 on all platforms, and occurs when the JDBC thin connector tries to connect between the RAC with the Service name instead of SID. The problem here is that the JDBC connect string des not have the appropriate SID name, causing ORA-12505 to interfere. Osama Mustafa offers this listener solution to resolve ORA-12505 with a JDBC thin client. jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=SCAN-LISTENER-NAME)(PORT=1530))(CONNECT_DATA=(SERVICE_NAME=Service-name))) Because ORA-12505 is often an issue within the listener.ora file, you might find this link helpful. Burle

 

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