TNS-12570: TNS:packet reader failure

I have a few client boxes that are reporting getting these errors.
Fatal NI connect error 12570, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=Oracle)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=FBC1)(CID=(PROGRAM=C:\Mercator\Mercntsv.exe)(HOST=MERCATOR2)(USER=SYSTEM))))
VERSION INFORMATION:
TNS for 32-bit Windows: Version 9.2.0.7.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 9.2.0.7.0 - Production
Time: 01-APR-2008 18:05:04
Tracing not turned on.
Tns error struct:
ns main err code: 12570
TNS-12570: TNS:packet reader failure
ns secondary err code: 12560
nt main err code: 530
TNS-00530: Protocol adapter error
nt secondary err code: 53
nt OS err code: 0
They seem to occur sporadically - the application running on it will be fine for 4 minutes, then a flurry of these errors in the space of 2 seconds, then fine for a little while. The network guy is looking at things from his end, but how do I debug this to make sure I have done everything I can?
The server isn't reporting any issues that I can see (but I may not have my debug levels set correctly to catch this), and both client and server are running the same version.
Any ideas how I should be proceeding?
Edit: Sorry, misleading title
Message was edited by:
jlaidlaw
Message was edited by:
jlaidlaw

The troubleshooting section of the Net administrators manual would have been a good place to start.
It would have told you how to enable tracing, by putting the following in sqlnet.ora
on the client.
trace_level_client=16
trace_unique_client=true
trace_directory_client=anything
This will provide a plethora of bytes, and the error message, as well as accompanying messages which are usually not shown.
trace_level_client=0 disables tracing,
But the problem is with the network, you won't find anything
Sybrand Bakker
Senior Oracle DBA

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Message: ORA-12570: TNS:packet reader failure

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when i execute the below program,getting "Message: ORA-12570: TNS:packet reader failure" error. java version is 1.3.1 and oracle
version is :9.1.
able to connect to database using sql plus with the same user-id and
password.
Any help in this regard is appreciated.
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Chat
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Error : 12570
C:\mjava>

Hi Chat,
You are using the oci8 driver and you may or may not be aware that oci8 is a type 3 driver that requires that the Oracle client be installed on the computer that is running the Java program. It also requires that you setup Oracle networking correctly, usually by putting an entry into your Oracle tnsnames.ora file.
If there is no reason in particular that you are using the oci8 driver, then you should use the thin driver instead. The thin driver is a type 4 driver and does not require the Oracle client to be installed, and does not require configuration of Oracle networking. You do have to download the Oracle JDBC drivers from the Oracle website to the computer you are going to run your program on, and then place the oracle .jar files that contain the driver into the programs CLASSPATH. This can be done by setting an environment variable or by passing it to java.exe as a command line parameter. The url for the thin driver looks something like this, but you should check the Oracle doc for specifics or search this forum for more examples:
jdbc:oracle:thin:@myserver:1521:mydatabaseWhen using a type 3 driver you should verify that you have Oracle networking properly configured for the computer that will be running your Java program by either connecting to the database using SQL/Plus or 'ping' the database using Oracle's tnsping utility. Make sure you check for valid connectivity before trying to run your Java program.

Random ORA-12570: TNS:packet reader failure errors

We are seeing random ORA-12570: TNS:packet reader failure errors. Trace files regularly show the following entries:
2012-09-06 14:45:01.974959 : nttrd:entry
2012-09-06 14:45:23.327987 : ntt2err:entry
2012-09-06 14:45:23.328093 : ntt2err:soc 844 error - operation=5, ntresnt[0]=530, ntresnt[1]=53, ntresnt[2]=0
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2012-09-06 14:45:23.328127 : nttrd:exit
2012-09-06 14:45:23.328177 : nserror:nsres: id=0, op=68, ns=12570, ns2=12560; nt[0]=530, nt[1]=53, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
Oracle Client is Server 2008 R2 on VMWare.

Hi;
Please also review:
ORA-12570 ON CONNECTION ATTEMPT IN SERVER MANAGER WITH NO NETWORK CONNECTION [ID 91210.1]
But As mention here rise SR please
PS:Please dont forget to change thread status to answered if it possible when u belive your thread has been answered, it pretend to lose time of other forums user while they are searching open question which is not answered,thanks for understanding
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ORA-12570 TNS PACKET FAILURE

I am trying to instal oracle(8 1 5) on my window 2000. Everything works fine but when it get to were to build the starter database, I get thisd message
ora-12570 TNS packet failure.
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Dear Gurus
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ORA-12571-TNS: PACKET WRITER FAILURE

Hi All,
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this error usually network problem..... i googled it found some solutions try
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** Loose network cables. This error has been observed when there was a loose cable connection to the SCSI disk array (on an Oracle Parallel Server system). Related errors were also subsequently noted in the NT event log.*
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ORA-12571 TNS : Packet Writter Failure

Hi all,
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user7728510 wrote:
Hi,
for what i know, MSDAORA provider doesn't support Oracle data types introduced since <font face="tahoma,verdana,sans-serif" size="1" color="#000">version</font> 8, as CLOB, BLOB and so on, so i think that it uses varchar2 up to the 4k limits and then causes this error.
Have you tried with the OraOLEDB.Oracle.1 provider instead?Nice writing, Thanks for your explanation!

Help - Newbie - getting "ORA-12571: TNS: packet writer failure" ERROR

Hi all,
Not sure where to post this, so trying for the general forum to start...
I have also searched and read all the forums for help on this already as well the Oracle documentation and anything I could find from several on-line searches, etc.
I have Oracle 8i Enterprise Edition and Oracle Forms 6i installed on Win2K. Everything worked fine when it was just Oracle 8i running, ie: connecting to the database in SQLPlus Worksheet, but when I try and connect to the database in the datablock wizard in forms I get the ORA-12571: TNS: packet writer failure error!
Don't tell me to re-install, I've done that like 6 times already. I've check the tnsnames.ora files and tried that fix already. I don't know what else to try short of fdisk and redoing everything from scratch again, but I don't have time for that as this machine is used daily for other tasks.
Any help or suggestions are appreciated!!!
Thx in advance!
Michelle.
PS: Note to Oracle support staff if you are listening (pardon the pun). Your one line of help for ORA-12571 in the existing support files is rather similar to the Hitchhikers Guide to the Galaxy's info for Earth... After seeing how many people have posted about this problem and how few resources or real answers there are out there, you might want to consider updating the info on this error, because is deserves something more than "mostly harmless"!

This question probably best belongs on the General database forum.

TNS-12570: TNS:packet reader failure

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