Oracle Error Code 03135
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Ora-03135 Connection Lost Contact Oracle 12c
creative nature of the product allows every table and data set to be as complex as the user desires it to be. Still, this range of components can lend itself to a variety of errors. For the sake of simplicity, it helps to break these errors down into two sets: those that occur in the data/coding, and those that pertain to software/network settings. The ORA-03135 is an error that stems ora-03135 connection lost contact standby from the latter. The negative of this kind of error is that it can happen to any user, whether working with complex table setups or not. The positive is that there are a few basic strategies that can be employed to counter this error. The Problem An ORA-03135 error reads as the “connection lost contact”. This means that the server connection was unexpectedly terminated or forced to terminate. This can also mean that the server simply timed out the connection. The error often occurs when connecting from a remote location and the firewall in your network terminates the connection. While this overall cause is fairly straightforward, the unfortunate aspect of the ORA-03135 is that there are a number of approaches to the solution, each dependent on the situation. Let’s take a look at how to properly diagnose the ORA-03135’s cause and some of the methods for correcting it. The Solution The best place to start is by diagnosing the error. To do this, begin by checking if the OS PID (OS Process Identification) still exists. Use the ps -ef|grep syntax to do so. From there, check to make sure that the Network Address Translation between the client and the server also still exists. If neither of t
HH24:MI:SS') from dual TO_CHAR(SYSDATE,'DD.MON.YYYYH ----------------------------- 28.SEP.2012 10:52:01 ora-03135 connection lost contact data guard Elapsed: 00:00:00.01 (Delay for 35+ minutes) SQL> r 1*
Ora 03135 Connection Lost Contact Dbd Error Ocisessionbegin
select to_char(sysdate,'DD.MON.YYYY HH24:MI:SS') from dual select to_char(sysdate,'DD.MON.YYYY HH24:MI:SS') from dual * ERROR at
Sqlplus Ora-03135 Connection Lost Contact
line 1: ORA-03135: connection lost contact Elapsed: 00:05:22.63 Note the elapsed time of 5 mintes 22 seconds. To debug enable a client https://www.tekstream.com/resources/ora-03135-connection-lost-contact/ side SQL*net trace and reproduce the error. In this case after several tests the error occured after 30 minutes. Oracle 11.1+ database versions mask the "ORA-03135" error and return a result after the 5 minutes which may lead the DBA down the wrong http://stelliosdba.blogspot.com/2012/10/ora-03135-connection-lost-contact.html path believing there is a problem with the database. For 11g the DIAG_ADR_ENABLED=off must be set otherwise trace files will go to the DIAGNOSTICS destination. To not interfer with other users create the SQLNET.ORA and TNSNAMES.ORA in your own directory and use them by setting the TNS_ADMIN variable. SQLNET.ORA TNSPING.TRACE_LEVEL=admin TNSPING.TRACE_DIRECTORY=/home/oracle/dba/user1/tns_admin/trace/ TRACE_LEVEL_CLIENT=admin TRACE_DIRECTORY_CLIENT=/home/oracle/dba/user1/tns_admin/trace/ TRACE_UNIQUE_CLIENT=on TRACE_TIMESTAMP_CLIENT=on TRACE_TIMESTAMP_SERVER=true TRACE_FILE_CLIENT=client_trace DIAG_ADR_ENABLED=off Information gathered in the trace file: [28-SEP-2012 11:29:21:622] nioqsm: send-break: failed to send oob break... [28-SEP-2012 11:29:21:622] nioqper: error from send-marker [28-SEP-2012 11:29:21:622] nioqper: ns main err code: 12547 [28-SEP-2012 11:29:21:622] nioqper: ns (2) err code: 12560 [28-SEP-2012 11:29:21:622] nioqper: nt main err code: 517 [28-SEP-2012 11:29:21:622] nioqper: nt (2) err code: 32 [28-SEP-2012 11:29:21:622] nioqper: nt OS err code: 0 [28-SEP-2012 11:29:21:622] nioqsm: exit [28-SEP-2012 11:29:21:622] nioqer: entry [28-SEP-2012 11:2
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the http://stackoverflow.com/questions/12163370/ora-03135-connection-lost-contact-when-inserting-large-file company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up “ORA-03135: connection lost contact” when inserting large file up vote 6 down vote favorite I'm trying to do an connection lost insert with a potentially large amount of binary data into a remote Oracle (11g) database using Entity Framework (ODP.Net). It works fine for really small files (<5 KB), but for larger ones (e.g. 44 KB) I get an error: "ORA-03135: connection lost contact". I don't think it's timing out, as the exception occurs within a second of executing the command. I tried setting both of the following in my connection string, but to connection lost contact no avail: Validate Connection=true Pooling=false I also looked in the listener.log file on the remote machine. It shows the connections being made, but no sign of exceptions or terminated connections. I'm up for suggested fixes or troubleshooting methods. Edit: The same SQL operations work when accessing an Oracle instance on the local network. c# oracle odp.net share|improve this question edited Jan 5 '14 at 19:07 Guido Leenders 2,0921828 asked Aug 28 '12 at 16:12 Ishmael Smyrnow 6491623 Well maybe it is not that, but I had the "ORA-03135: connection lost contact" on weird stuff when the connection was not lost at all it only happend that Oracle was no longer able to swallow the SQL statement submitted. I got it on huge queries (>2000 line of code). Maybe I am sending you on the right track but I thought after 4 hours no answer I at least could tell you that piece of my own experience. For me it looked like the message always appears when the parser of the SQL command crashed in the background. –hol Aug 28 '12 at 20:47 Might be worth checking the alert log on the remote machine to see if that reported an error. If not it maybe points to the problem being at the clien