Able to connect to SQL Developer but not a toad - ORA-12154: TNS

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  Hello

  I am not able to connect to the database using sqlplus, using following command:

  sqlplus activites@OCA010

  I get the error message "ORA-12154: TNS: could not resolve the connect identifier specified.

  I tried to connect by providing the full as connection string: "" sqlplus activities / [email protected]:1521 / compix "and he succeeded."

  I also tried to connect using sql developer by providing network TNS alias 'OCA010' it is also successful.

  Someone could please help out here and let me know how can I connect using sqlplus using aliases TNS network.

  content of the tnsnames.ora file is as follows

  tnsnames.ora # Network Configuration file: D:\Oracle\product\11.2.0\dbhome_1\network\admin\tnsnames.ora

  # Generated by Oracle configuration tools.

  COMPIX =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP) (HOST = LUCKY-HP)(PORT = 1521))

  (CONNECT_DATA =

  (SERVER = DEDICATED)

  (SERVICE_NAME = compix)

  )

  )

  BC =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP) (HOST = LUCKY-HP)(PORT = 1521))

  (CONNECT_DATA =

  (SERVER = DEDICATED)

  (SERVICE_NAME = BC)

  )

  )

  ORACLR_CONNECTION_DATA =

  (DESCRIPTION =

  (ADDRESS_LIST =

  (ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC1521))

  )

  (CONNECT_DATA =

  (SID = CLRExtProc)

  (PRESENTATION = RO)

  )

  )

  OCA01 =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP) (HOST = LUCKY-HP)(PORT = 1521))

  (CONNECT_DATA =

  (SERVER = DEDICATED)

  (SERVICE_NAME = OCA01)

  )

  )

  OCA010 =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.10.3)(PORT = 1521))

  (CONNECT_DATA =

  (SERVER = DEDICATED)

  (SERVICE_NAME = compix)

  )

  )

  Thanks in advance.

  2931143 wrote:

  Hi EdStevens,

  I used option TNS with Alias network as 'OCA010' in Sql Developer.

  I checked in tnsping and tnsnames.ora directory is correct.

  Please find below the exit of tnsping:

  C:\Users\LUCKY>tnsping OCA010

  AMT Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on October 29, 2015 21:07:38

  Copyright (c) 1997, 2010, Oracle.  All rights reserved.

  Use settings files:

  D:\Oracle\product\11.2.0\dbhome_1\NETWORK\ADMIN\sqlnet.ora

  AMT-03505: failed to resolve the name

  Have you worked from the link I provided?  (I don't think you have time to do).

  It is possible that your tnsnames.ora is corrupted by some weird characters printable somewhere.  In some versions of the oracle, he might be sensitive to spaces vs. tabs.  If in doubt, netca to add entries, rather than doing it by hand.

• DB Link error: ORA-12154: TNS: could not resolve the connect identifier...

  All,
  
  Help, please. I get the error above despite all I know to do:
  
  tnsnames.ora entry for the remote database (it is what is on the local database):
  
  ORACLE6. STAGING =
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  (ADDRESS = (PROTOCOL = TCP)(HOST = oracle6.staging.hobank.net) (PORT = 1521))
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  sqlplus kay/[email protected]
  ...
  ...
  
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  With partitioning, OLAP and Data Mining options
  
  SQL > select * from emp;
  
  EMPNO, ENAME, JOB HIREDATE SAL COMM MGR
  ---------- ---------- --------- ---------- --------- ---------- ----------
  DEPTNO
  ----------
  2 Kay Baffy DBA 1 6 November 10 50000.25
  2
  
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  Next, I created the database link that is connected to the local database:
  
  create the database public link oracle6.staging
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  Database link created.
  
  !!! But the following does not work:
  
  SQL > select * from [email protected];
  Select * from [email protected]
  *
  ERROR on line 1:
  ORA-12154: TNS: could not resolve the connect identifier specified
  
  
  I am sure of the following:
  
  1 DB link has been created on the local database.
  2 oracle6.staging entry is tnsnames.ora
  3. I am able to connect to a remote database with: sqlplus kay/[email protected]
  
  * Any help will be be appreciated.* *.
  
  Thanks in advance.
  
  Baffy

  See the link:-hope, it will be useful for you.

  Troubleshooting of database links
  http://www.akadia.com/services/ora_dblinks.html

  Kind regards

• ORA-12154: TNS: could not resolve the specified connection identifier [10g XE]

  Greetings
  
  There are a lot of topics about this problem on the internet, but none of them deal with this issue properly, so I couldn't find a solution to the problem.
  
  I installed: Oracle Database 10 g Express Edition
  
  After that the installation was done, I opened the SQL command line
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  I enter username
  Then I entered the password
  
  After a few seconds, I got the following error message:
  ORA-12154: TNS: could not resolve the connect identifier specified
  
  Screenshot of the error:
  http://I35.Tinypic.com/14o26g7.PNG
  
  I installed this version of Oracle on Windows XP 32 bit and Windows 7 32 bit and I get the same error message when it tries to connect.
  
  Why Oracle does not immediately after installation?
  Are there other measures that need to be accomplished in order to make this work? If so I'd appreciate any help step by step, I was stuck trying to find a solution for days.
  
  Published by: user10192105 on August 22, 2010 19:34

  >
  I was able to connect using the above command, but I would like to know why can't connect using a user name and password? I still cannot connect using a user name and password even after the environment variable.
  >

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• ORA-12154: TNS: could not resolve the connect through TOAD VAT registration

  Hello
  
  I want to configure the TOAD to connect to servers on my place of work.
  
  I installed on my laptop desktop
  
  Toad for Oracle 9.7
  Oracle client 10g Express edition
  
  I am able to connect to the server to other servers in the office at the level of the unix.
  
  But I get this error message.
  
  Oracle (from the server to access) version: 11 GR 1 material
  
  
  
  See you soon,.
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  Hello
  It is not related to Toad, check the TNS entry in your TNSNAMES.ora & make sure what is it pointing to the appropriate service name.

  Error: ORA-12154 / TNS-12154
  Text: TNS: could not resolve service name
  -------------------------------------------------------------------------------
  Cause: The specified service name is not defined correctly in the
  TNSNAMES. ORA file.
  Action: Perform the following checks and fix the error:
  -Check that a TNSNAMES file. ORA file exists and is in good
  Place and accessible. Refer to the specific manual of operating system
  For more information on the location and the name required.
  -Check that the name of the service exist in one of the
  TNSNAMES. ORA file and add if necessary.
  -Make sure that there are no errors of syntax anywhere in the file.
  Search for unmatched parentheses or stray characters.
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• ORA-12154: TNS: could not resolve the connect identifier specified

  Hello

  I installed Oracle 11 g server in Windows 2008 and also installed customer DB 64 & 32 on the same server client.

  When I try to test the Oracle DB connection using the UDL file, I get the error message below. Please could you help me solve this problem.

  -Microsoft Data Link Error.

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  [DBNETLIB] [ConnectionOpen(connect()) (Connect()).]

  SQL Server is not, or access is denied.

  --------------------------- OK  ---------------------------

  I have connected to SQL using sysdba and tried to connect to the schema. It is not connection and throwing below error.

  "ORA-12154: TNS: could not resolve the connect identifier specified.

  I checked the TNSNAMES.ora file. Everything seems fine.

  Thank you

  Michel K

  Hello

  I see just a glance on the tnsnames file you are missing at least one sign =...

  You have

  ORCL

  (DESC...

  You should have

  ORCL =

  (DESC...

  There may be other issues too, but give that a try at first - you better run netmgr to allow oracle to create the file for you.

  See you soon,.

  Rich