TNS:packet checksum failure

I recently installed a local oracle database running off my computer. When I try to connect to it, I get a "TNS:packet checksum failure" error. I have searched for an explanation and learned that I should retry and, if that fails, to "set up a tracer." This has consistently failed. How do I fix it or set up a tracer?
I can post code if necessary.
Thanks!

CCMP:/var/opt/oracle:>set
APPL_TOP=/opt/appl/r10
BKPLOG=/var/log/oracle/bkp
C='\c'
DBA=/opt/oracle/dba
EDITOR=vi
ENV=/opt/oracle/.profile
ERRNO=2
FCEDIT=/bin/ed
HOME=/opt/oracle
IFS='
LC_COLLATE=en_CA.ISO8859-1
LC_CTYPE=en_CA.ISO8859-1
LC_MESSAGES=C
LC_MONETARY=en_CA.ISO8859-1
LC_NUMERIC=en_CA.ISO8859-1
LC_TIME=en_CA.ISO8859-1
LD_LIBRARY_PATH=/usr/lib:/usr/ucblib:/usr/ccs/lib:/usr/dt/lib:/usr/openwin/lib:/data/CCMP/oracle/10.2.0.2/lib/
LINENO=1
LOGNAME=oracle
MAIL=/var/mail//oracle
MAILCHECK=600
MANPATH=/usr/share/man:/opt/local/man
N=''
NEWSID=CCMP
NLS_DATE_FORMAT='DD-MON-YYYY hh24:mi:ss'
NLS_DATE_LANGUAGE=AMERICAN
NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1
NLS_NUMERIC_CHARACTERS=.,
OLDHOME=/data/CO3P/oracle/10.2.0.3-64
OLDPWD=/data/CCMP/oracle/10.2.0.2
OPTIND=1
ORACLE_BASE=/opt/app/oracle
ORACLE_DOC=/opt/app/oracle/doc
ORACLE_HOME=/data/CCMP/oracle/10.2.0.2
ORACLE_SID=CCMP
ORACLE_TERM=vt220
ORACLE_TRACE=NO
ORAHOME=/data/CCMP/oracle/10.2.0.2
ORA_NLS=/data/CCMP/oracle/10.2.0.2/ocommon/nls/admin/data
ORA_NLS32=/data/CCMP/oracle/10.2.0.2/ocommon/nls/admin/data
PATH=/usr/bin:/usr/ucb:/opt/oracle/bin:/usr/ccs/bin:/bin:/opt/local/bin:/data/CCMP/oracle/10.2.0.2/bin
PATH_DEV=/usr/ccs/bin:/bin
PATH_LOC=/opt/local/bin
PATH_SYS=/bin:/usr/bin:/usr/ucb:/etc:/usr/ccs/bin:/usr/proc/bin:/usr/sbin
PPID=18442
PS1='$ORACLE_SID:$PWD:>'
PS2='> '
PS3='#? '
PS4='+ '
PWD=/var/opt/oracle
RANDOM=18750
SECONDS=5289
SHELL=/bin/ksh
SQLPATH=/opt/oracle/dba/sqlrun/sql
SSH_CLIENT='172.19.15.70 50896 22'
SSH_CONNECTION='172.19.15.70 50896 168.94.168.179 22'
SSH_TTY=/dev/pts/4
TERM=vt100
TMOUT=0
TMPDIR=/var/tmp
TNS_ADMIN=/var/opt/oracle/
TZ=Canada/Pacific
ULIMIT=unlimited
USER=oracle
WORKDIR=/tmp
_=ccmp

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'ORA-12571: TNS:packet writer failure' error while calling procedure from VC++

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Hi
We recently changed our load balancer to a new load balancer. we get this error only after the load balancer change.
When the error occurs, I could see ORA-12571 error message only in the application error log. The listener.log has only the following message about TNS 12502. It does not have any message about ORA -12571.
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ORA-12571: TNS:packet writer failure while calling procedure from VC++

hi all,
i am writing stored procedures and calling these from vc++. I have one stored procedure in that all
in and out perameters are numeric. When i am calling these procedure i am able to get the values properly. But in another procedure one in perameter is varchar and one out perameter is varchar. When i am calling these procedure from vc++ the error i am getting is "ORA-12571: TNS:packet writer failure". I test my vc++ code on different computers but its giving the same errors. I think ora-12571 error is when i can't communicate with oracle. But other stored procedures(in and out perameters are numbers) and sql statements are running properly. Only these stored procedure which has in and out perameters as varchar is giving me the above said problem. My out perameter in this procedure strtax is of type varchar and the length 100. Is it the problem. Please suggest me how to over come this problem.
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hi,
thanks for reply,
I wanna let u know that this is my personal lappy & i have installed apps dump on it in Linux & connect it through VM player in Window environment. I have recently purchased a new Antivirus K7 & installed it on my Lappy. i wanna know does this impact your application or Dbase Bcoz the application is running fine after starting the services in linux.
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shud i uninstall the antivirus on this And this is the only solution to it ?
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kindly suggest.
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Hi All,
am using oracle 6i and facing this problem when am connecting Forms to Database..
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Neha

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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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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!

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
2012-09-06 14:45:23.328112 : ntt2err:exit
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
Regard
Helios

ORA 012571 TNS Packet Writer Failure ... ???

I have installed the Designer 6i and when I attempt to login to the designer application, I am stopped by the error ORA 012571 TNS Packet Writer Failure.
I have no idea what is causing this error, and therefore can't use the product.
Looking for any/all help
Darrell K.

This is from documentation:
TNS-12571 TNS:packet writer failure
Cause: An error occurred during a data send. This message is not normally visible to the user.
Action: For further details, turn on tracing and re-execute the operation. If the error persists, contact Oracle Customer Support
Maybe this will be a little help for you.
Helena

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.

Ora Error:12570: TNS Packet Reader Failure

Hi,
I installed Oracle 8.1.5 on windows NT 4.0(Service Pack 5). When I am trying to create a local database. After completeing 85% of process. I am getting TNS Packet Reader Failure Error. All this is happening when i am not connected to network. I am able to create a local database if i am connected to my Office Network. Please Can anyone help me?
Details once again:
Oracle 8.1.5
Windows NT 4.0(Service Pack 5)
Network Protocol is TCP/IP(Protcol used for database)
TCP/IP Port number is 1521
Thanks
skumar

I am getting this error message
ORA-12570: TNS:packet reader failure
i haven't got any sensible detail about it.
Does anyone know about it.
Ajwat The configuration of your environment variables are not correct
(ORACLE_HOME, ORACLE_SID,...)

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

TNS:packet checksum failure

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