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Login in DATABASE From Server [message #655305] Fri, 26 August 2016 09:10 Go to next message
HZAA
Messages: 13
Registered: November 2014
Junior Member
I have Installed ORACLE Databases Server 11G on server.
when I try to login to Database from inside the server and connect with any users without writing host string(database name) it connect successfully.
but when i write database name like SYSTEM@ORCL it gives Error ora-12154 :TNS.
can anyone help me.



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[Updated on: Fri, 26 August 2016 09:52] by Moderator

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Re: Login in DATABASE From Server [message #655307 is a reply to message #655305] Fri, 26 August 2016 09:11 Go to previous messageGo to next message
BlackSwan
Messages: 26195
Registered: January 2009
Location: SoCal
Senior Member
ora-12154 ALWAYS only occurs on SQL Client & no SQL*Net packets ever leave client system
ora-12154 NEVER involves the listener, the database itself or anything on the DB Server.
ora-12154 occurs when client requests a connection to some DB server system using some connection string.
TNS-03505 is thrown by tnsping & is same error as ora-12154 thrown by sqlplus or others.
The lookup operation fails because the name provided can NOT be resolved to any remote DB.
The analogous operation would be when you wanted to call somebody, but could not find their name in any phonebook.
The most frequent cause for the ora-12154 error is when the connection alias can not be found in tnsnames.ora.
The lookup operation of the alias can be impacted by the contents of the sqlnet.ora file; specifically DOMAIN entry.
TROUBLESHOOTING GUIDE: ora-12154 & TNS-12154 TNS:could not resolve service name [ID 114085.1]
http://edstevensdba.wordpress.com/2011/02/26/ora-12154tns-03505/
Re: Login in DATABASE From Server [message #655320 is a reply to message #655307] Sat, 27 August 2016 06:17 Go to previous messageGo to next message
HZAA
Messages: 13
Registered: November 2014
Junior Member
Can you Clarify more
Re: Login in DATABASE From Server [message #655322 is a reply to message #655320] Sat, 27 August 2016 07:42 Go to previous messageGo to next message
EdStevens
Messages: 983
Registered: September 2013
Senior Member
HZAA wrote on Sat, 27 August 2016 06:17
Can you Clarify more
Did you bother following the link? http://edstevensdba.com/oracle-tns/ora-12154tns-03505/
Re: Login in DATABASE From Server [message #655323 is a reply to message #655307] Sat, 27 August 2016 07:44 Go to previous message
EdStevens
Messages: 983
Registered: September 2013
Senior Member
Blackswan - please note the all of the primary content of edstevensdba.wordpress.com has been relocated to edstevensdba.com. The specific article for ora-12154 is now at http://edstevensdba.com/oracle-tns/ora-12154tns-03505/
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