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Ora-12154 [message #409921] Wed, 24 June 2009 08:08 Go to next message
fall_in_luv
Messages: 5
Registered: January 2009
Location: Egypt
Junior Member
plzzzz help....
when i finished installing the oracle forms software,,and run the services
i push the connection button to type the username , password and " identifier" to be connected with the database,,
then this problem happened

ORA-12154
i need a simple solution
Re: Ora-12154 [message #409927 is a reply to message #409921] Wed, 24 June 2009 08:35 Go to previous messageGo to next message
cookiemonster
Messages: 12409
Registered: September 2008
Location: Rainy Manchester
Senior Member
12154, 00000, "TNS:could not resolve the connect identifier specified"
// *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:
// - If you are using 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.
// - Check that the net service name used as the connect identifier
// exists in the TNSNAMES.ORA file.
// - Make sure there are no syntax errors anywhere in the TNSNAMES.ORA
// file. Look for unmatched parentheses or stray characters. Errors
// in a TNSNAMES.ORA file may make it unusable.
// - If you are using directory naming:
// - Verify that "LDAP" is listed as one of the values of the
// NAMES.DIRETORY_PATH parameter in the Oracle Net profile
// (SQLNET.ORA).
// - Verify that the LDAP directory server is up and that it is
// accessible.
// - Verify that the net service name or database name used as the
// connect identifier is configured in the directory.
// - Verify that the default context being used is correct by
// specifying a fully qualified net service name or a full LDAP DN
// as the connect identifier
// - If you are using easy connect naming:
// - Verify that "EZCONNECT" is listed as one of the values of the
// NAMES.DIRETORY_PATH parameter in the Oracle Net profile
// (SQLNET.ORA).
// - Make sure the host, port and service name specified
// are correct.
// - Try enclosing the connect identifier in quote marks.
//
// See the Oracle Net Services Administrators Guide or the Oracle
// operating system specific guide for more information on naming.
Re: Ora-12154 [message #410039 is a reply to message #409921] Wed, 24 June 2009 23:06 Go to previous message
djmartin
Messages: 10180
Registered: March 2005
Location: Canberra ACT Australia
Senior Member
Account Moderator
Search this forum for 'tns_admin'.

David
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