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Re: ORA-12545 Connect failed because target host or object does not exist

From: Frank <fvanbortel_at_netscape.net>
Date: Sun, 18 May 2003 20:31:26 +0200
Message-ID: <3EC7D17E.3080706@netscape.net>


Nicolas Bronke wrote:

>>This error is common when using MTS option. Why ??? because the
>>MTS_DISPATCHER parameter specify the address of the dispatcher, that the
>>last one is returning to the client while trying to connect.
>>
>>in any case, a 'sqlnet.log' file will be generated at the current

>
> directory,
>
>>wich contains useful informations
>>
>>

>
> Now I check the log fille. It shows
>
> Fatal NI connect error 12545, connecting to:
>
> (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.230)(PORT=1521))(CONNECT
> _DATA=(SID=TMS)(CID=(PROGRAM=C:\oracle\ora90\bin\sqlplus.exe)(HOST=TMS10)(US
> ER=NBronke))))
>
> VERSION INFORMATION:
> TNS for 32-bit Windows: Version 9.2.0.1.0 - Production
> Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version
> 9.2.0.1.0 - Production
> Time: 18-MAI-2003 18:19:37
> Tracing not turned on.
> Tns error struct:
> nr err code: 0
> ns main err code: 12545
> TNS-12545: Verbindungsversuch nicht erfolgreich, weil Ziel-Host
> oder -Objekt nicht vorhanden ist
> ns secondary err code: 12560
> nt main err code: 515
> TNS-00515: Verbindung nicht erfolgreich. Ziel-Host oder -Objekt nicht
> vorhanden.
> nt secondary err code: 1004
> nt OS err code: 0
>
> but I cannot decode it. (Please do not be iconfused because of Oracle 9i.
> This is only my client and the problem also occurs from Ora 8.1.7 clients)
>
> Interesting is, that if I restart the listenerthe connection works for a
> while.
>
> Any Ideas?
>
> Regards
>
> Nicolas
>

nt error 1004: error_invalid_flag. Any takers? Have you tried service_name = tms instead of sid? Is your listener using sid, too?

-- 
Regards, Frank van Bortel
Received on Sun May 18 2003 - 13:31:26 CDT

Original text of this message

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