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			| Re: restart of the database service causes ORA-12514: TNS:listener does not currently know of service re [message #558957 is a reply to message #558956] | 
			Wed, 27 June 2012 12:54    | 
		 
		
			
				
				
				
					
						
						Andrey_R
						 Messages: 441 Registered: January 2012  Location: Israel
						
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		>> If the database is up and running, what is the problem? 
 
the database and listener services in the OS are up and running.  
I cannot connect to the database due to the originally posted error. 
 
I *restarted* the database and listener services to see if this will solve the original error,  
but it didn't, still can't connect. 
 
I have a TNS_ADMIN environment variable that leads to %ORACLE_HOME%\network\admin. 
I tried to change it to C:\oracle\product\10.2.0\db_1\network\admin and restart the listener - same problem. 
 
any ideas what else should  I check?
		
		
		
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			| Re: restart of the database service causes ORA-12514: TNS:listener does not currently know of service re [message #558965 is a reply to message #558958] | 
			Wed, 27 June 2012 14:01    | 
		 
		
			
				
				
				
					
						
						Andrey_R
						 Messages: 441 Registered: January 2012  Location: Israel
						
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this is probably what has happend. 
 
I am still investigating what and why caused this.. 
but what has let me connect was defining the next set of variables explicitly in SQL*Plus session: 
 
set ORACLE_SID=*SID_NAME* 
set ORACLE_HOME=C:\oracle\product\10.2.0\db_1 
PATH %ORACLE_HOME%\bin;%PATH% 
set NLS_LANG=AMERICAN_AMERICA.WE8PC850 
set NLS_DATE_FORMAT=yyyy-mm-dd.hh24-mi-ss 
set NLS_TIMESTAMP_FORMAT=yyyy-mm-dd.hh24-mi-ss.ff6 
set TNS_ADMIN=%ORACLE_HOME%\network\admin 
set SQLPATH=%ORACLE_HOME%\rdbms\admin;c:\my_scripts 
 
can someone guess what of these solved the issue? 
 
Regards, 
Andrey 
		
		
		
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			| Re: restart of the database service causes ORA-12514: TNS:listener does not currently know of service re [message #558978 is a reply to message #558965] | 
			Wed, 27 June 2012 15:14    | 
		 
		
			
				
				
				
					
						
						joy_division
						 Messages: 4963 Registered: February 2005  Location: East Coast USA
						
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		Andrey_R wrote on Wed, 27 June 2012 15:01 
this is probably what has happend. 
 
I am still investigating what and why caused this.. 
but what has let me connect was defining the next set of variables explicitly in SQL*Plus session: 
 
set ORACLE_SID=*SID_NAME* 
set ORACLE_HOME=C:\oracle\product\10.2.0\db_1 
PATH %ORACLE_HOME%\bin;%PATH% 
set NLS_LANG=AMERICAN_AMERICA.WE8PC850 
set NLS_DATE_FORMAT=yyyy-mm-dd.hh24-mi-ss 
set NLS_TIMESTAMP_FORMAT=yyyy-mm-dd.hh24-mi-ss.ff6 
set TNS_ADMIN=%ORACLE_HOME%\network\admin 
set SQLPATH=%ORACLE_HOME%\rdbms\admin;c:\my_scripts 
 
can someone guess what of these solved the issue? 
  
 
Again I do not understand. If you cannot connect, how did you set these variables in a sql*plus session? And the above are OS environment variables, not DEFINEd sqlplus session variables. 
ORACLE_SID is what connects you to the correct database if it is set at the OS (along with ORACLE_HOME).  
		
		
		
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