How can I fix this message? A message appears when downloading
Related
I am getting the error as 'ORA-03135: connection lost contact' from my C# code while making connection to oracle DB. The same job works just fine from our test server. But it failed with ORA-03135: connection lost contact error from prod server.
The C# code use ODAC to connect to oracle DB.
Appreciate your inputs.
Thank you
This error is most likely caused by a firewall blocking the connection request. Check for any firewalls in your network or on the database server and make sure your access rules are configured correctly.
Also check this link for more troubleshooting tips: http://www.dba-oracle.com/t_ora_03135_connection_lost_contact.htm
ORA-03135: connection lost contact tips
What can I do to avoid the ORA-03135 error?
Answer: The oerr utility shows this for the ORA-03135 error:
ORA-03135: connection lost contact
Cause:
1) Server unexpectedly terminated or was forced to terminate.
2) Server timed out the connection.
Action:
1) Check if the server session was terminated.
2) Check if the timeout parameters are set properly in
sqlnet.ora.
The ORA-03135 error is common when connecting remotely when a firewall
terminates the connection.
One solution for the ORA-03135 error is to increase the value of the
sqlnet.ora expire_time parameter in the sqlnet.ora file or to check
for a expire parameter in a SQL*Plus profile.
To diagnose the ORA-03135 error, start by checking to see if the OS
PID still exists, using the "ps -ef | grep" syntax.
Check to see if there is a Network Address Translation (NAT) between
the client and server
In Windows, check to see if a Windows firewall is checking for your
local connections.
...
Also, setting the parameters sqlnet.inbound_connect_timeout and
inbound_connect_timeout_listenername to 0 can stop the ORA-03135
error.
I'm using Google's simplehttp2server go-lang program to run some tests and have encountered a recurring error. Upon executing the TLS handshake I receive the following error:
2019/12/12 12:42:55 http: TLS handshake error from 127.0.0.1:36202: read tcp 127.0.0.1:5000->127.0.0.1:36202: use of closed network connection
I have updated my go version to 1.13.5 from 1.12.9 and tried two browsers (brave + chrome) plus curl and receive the same error code each time. It happens over HTTP/2 and HTTP/1.1. I have seem other answers from across the web but am still running into this error (ex1, ex2, ex3, ex4).
Very much appreciate any feedback, advice, or admonishment. Anything to help the migraine this problem is giving me!
edit: screenshot from my curl and running of simplehttp2server
example image from curl and simplehttp2server
This error happens when you have two websockets connected to a singular address using the same port from the same machine. One of the websockets will be able to connect fine but the other wont be able to make the connection.
I was making the same mistake and when I removed the duplicate connection the error resolved.
I am using Tftpd64 as server for transferring file to client.
Now when client request the file then i see below error in log viewer window of Tftpd64.
Connection received from 2a01:7e00:e000:11c:3546:7805:766:7110 on port 61445 [23/06 11:50:44.967]
Read request for file <test.ota>. Mode octet [23/06 11:50:44.967]
OACK: <blksize=1200,timeout=5,> [23/06 11:50:44.967]
Using local port 61801 [23/06 11:50:44.967]
File <test.ota> : error 10054 in system call recv An existing connection was forcibly closed by the remote host. [23/06 11:50:45.131]
Is any one have idea about above error?
Also i disabled the firewall in my PC but still getting same error.
Finally i am able to make Tftpd64 server up and running. I made below changes.
Enabled Windows Firewall.
Create rule for Tftp server (Widnows firewall->Advance settings->Inbound Rules->New Rule) to allow connection and apply rule for domain, public and private.
Running Instruments from the command line I started getting this:
instruments[2387:30342] Connection peer refused channel request for "com.apple.instruments.server.services.wireless"; channel canceled <DTXChannel: 0x7fa7116b7a10>
Any idea what the problem is and how to fix?
I'm also doing some research to find out the root cause of the problem. However, making sure Instruments is not running and/or restarting the device solved the issue.
I have an application that is listening for data received from GPRS units in the field on a normal TCP connection. I'm getting Winsock 10054 and 10053 errors.
As explained by microsoft
10053 : Software caused connection abort. An established connection was aborted by the software in your host machine, possibly due to a data transmission time-out or protocol error.
and
10054 : Connection reset by peer. An existing connection was forcibly closed by the remote host. This normally results if the peer application on the remote host is suddenly stopped, the host is rebooted, or the remote host uses a hard close (see setsockopt (Windows Sockets) for more information on the SO_LINGER option on the remote socket.) This error may also result if a connection was broken due to keep-alive activity detecting a failure while one or more operations are in progress. Operations that were in progress fail with WSAENETRESET. Subsequent operations fail with WSAECONNRESET.
I'm not sure how to interpret this. How do I determine if the error is caused on the server or by the client sending the information?