When SQL Developer is idle I lose my connection - sql

My problem is this: I am running Oracle 10G on windows 98 on a virtual machine using VMWare on my desktop computer. I can connect to several users (SYS, HR, OE, ... ) with SQL Developer (which is on my desktop not on the virtual machine) but if a don't run any SQL statement for a short while, say about 2 minutes, I lose my connection and get an error like connection closed or IO-fault:connection reset by peer.
Could this have anything to do with the sp_reset_connection?
When I open SQL Plus on my virtual machine itself I don't lose the connection at all, even if it has been idle for 30 minutes or longer. So now I'm thinking there could be a problem between the Virtual Machine and my desktop computer. Before this all worked fine.
I tried closing recently installed anti-malware apps without any result.
Anybody has an idea what I could do to fix this problem?
Kind regards,
Veek
I stumbled upon the Keep-ALive Extension and tried it as well but without succes. Standard it is set to a 2 minute interval. I've changed this value to 1 and to 60 minutes but as soon as I stop running statements for a short while I lose my connection. There must be something else. I've already installed the newest SQL Developer version but still it is the same. (I did import the settings from my earlier release maybe I have to try without importing them.)
Any other suggestions perhaps?
Kind regards,
Veek


This extension works for SQL Developer 4:
https://github.com/scristalli/SQL-Developer-4-keepalive
DISCLAIMER: I'm the developer of the extension. I hope the answer is not considered advertising, because this extension is open source (and the previous non-open-source extensions were accepted as an answer).


MinChen Chai has created Keep-Alive Extension exactly for your situation:
https://sites.google.com/site/keepaliveext
It will continually send TCP keep-alive packets and prevent server disconnection by inactivity timeout.


When used with the latest SQL Developer Version 4.0.0.13:
- MinChen's extension (http://sites.google.com/site/keepaliveext) doesn't work.
- The keepconnext extension (http://sites.google.com/site/keepconnext) too doesn't work anymore.


On SQL Developer go to Tools > Preferences > Databases > Instances Viewer. and the option traffic duration change it to the max, this worked for me.


Go to Tools > Monitor Sessions... and select your Connection. Set the refresh value to 60 (seconds).
While monitoring, your connection will not be lost.
Oracle SQL Developer Version 4.1.3.20


As the suggested extensions in this thread have had issues with recent versions of SQL Developer, I tried my way and got scristalli's code to work in a new project based on his code AND the oracle example repo.
Needs a lot of work but oh well, at least I can install the new build on SQLDev v19.2 and it works as expected.
Disclaimer: I'm the owner of the linked repo, although it's MIT as the previous versions. Feel free to fork it, pullrequest-it or do as you like

Related

SQL Server Browser won't start

I want to start playing around with databases in Java to help with my university work however I can't get SQL Server to work properly. I've installed it using the wizard and selecting 'Basic' the installing SSMS. However when launching SSMS I get Error 26. When researching this it says to make sure that the SQL Server Browser service is running. Unfortunately this is the issue, every time I try to start the service it fails.
All the fixes I've seen about this topic have been related to servers on another machine where as I am trying to run the server on my own PC. I've tried them anyway but nothing has worked so far. The only thing I can find that might give you a clue in helping me is that in the log file it says that it failed to register the SPN.

When working on my local machine, I don't usually need SQL Server browser - but my SQL Server itself isn't set up to run automatically.
You can go to services (either via window and search for 'services', or in Windows 10 open the task manager, go to the last tab 'services'). Find the 'SQL Server' service (it helps to sort by description column) and right click -> start.
If you take note of the name (default is 'MSSQLSERVER') you can start the service (e.g., in a batch file, from command line) using sc start "MSSQLSERVER" (or whatever your server instance is called).

Windows server is restarting by itself each 2 minutes

I am going crazy. My windows server 2008 r2 keep restarting by itself each 2 minutes. I cannot see the view logs.. Pls suggest what can be performed.. I saw the fixing in registry part but for me I am very fresh there .. And our system is life...
Thank you in advance.

Did you try this link?
To Stop automatic restart of server please un-check the marked option
in below snap shot. Also try to boot server in safe mode and check for
the similar kind of issue? Another useful step is go to run and type
msconfig|startup|uncheck startup items which are not required.

Connecting SQL Developer 1.5.4 to tnsnames.ora

I am having trouble establishing connections with tnsnames.ora while using SQL Developer 1.5.4. I have looked at other threads on this site and they have told me to go to Tools> Preferences > Database > Advanced > tnsnames directory. However I am missing the option to connect to tns directory and I am getting the option "Advanced Parameters" instead of just "Advanced". Does any body know where to find this option on SQL Developer 1.5.4? Sorry but it won't let me post an image.
I appreciate your help.
Thanks
Niall

I don't think you can. At my work, the DBAs years ago started keeping the current TNSNAMES.ORA on a network share, but we still had to maintain local versions for people using SQL Developer until relatively recently. To be honest, I don't remember which version the option was introduced to select a directory, but I would be quite confident it was later than the version you're on. As JaMaBing says, it's free and you don't need to install it, so why not upgrade anyway?

Oracle 10g express home page is not coming up

I installed Oracle 10g express. Installation went well, But the home page is not coming up.
I can connect using sqlplus but not with Sql Developer.
I checked tnsnames.ora and listener.ora everything looks fine.
Listener is also started. I can always reinstall and see. But I thought better inquire the cause.
Regarding the home page. This is the address that comes up in browser. Localhost:8080
http://127.0.0.1:8080/apex
I did a netstat to see whether there is any port conflict for 8080, but that port is not in use.
Have anybody faced this issue?

Yes. It is practically a FAQ on the XE Oracle forum.
Firstly, can you connect to Oracle using
sqlplus user/pass
If so, Oracle is up an running (which appears to be your situation, but may not be for a future reader with a similar problem). If not, you can try
sqlplus / as sysdba
startup
Once Oracle is up, check that the listener can see the Oracle instance by
sqlplus user/pass#xe
If not, then either the listener is not up, or the 'listener does not know of the service'. Make sure the listener is started (lsnrctl, then start). Make sure the database is registered with the listener
sqlplus / as sysdba
alter system register;
Now you should be able to connect using the '#xe' syntax. Worthwhile verifying the embedded PL/SQL gateway is set up to use the 8080 port
select dbms_xdb.GETHTTPPORT from dual;
On Windows you can use netstat -ab to see if tnslsnr.exe is listening on the port.
Then I'd suggest looking at browser settings (specifically any proxy settings that might be forwarding your request to a machine that has no idea what to do with it) and firewalls (which could well be set to ignore or hide any access to the port).

I had the same problem. I tried this and it sorted out my problem...
1. goto start->run
2.type services.msc and hit enter
3.In the applet that opened, scroll down(in right pane) to figure out the option of "OracleServiceXE" and right click on it. 4. In general tab do->>> startup type "Automatic" and click the "start button".
5. Repeat step 4. for the option "OracleXETNSListener".
close the window.
now, i hope, the problem should be solved....

Check your windows firewall,If it is on it blocks the opening of the homepage.Either you shut down the windows firewall or allow these following ports :
1521: Oracle database listener
2030: Oracle Services for Microsoft Transaction Server
8080: HTTP port for Oracle XML DB and the Oracle Database XE graphical user interface
See software requirements in the below URL:
http://download.oracle.com/docs/cd/B25329_01/doc/install.102/b25143/toc.htm#BABEBCDB
It worked for me!

Try this ( I'm assuming Windows system )
using
netstat
without anyother parameter would tell you if port 8080 is already open.
Also you can try this:
telnet localhost 8080
If the server answers ( the screen goes blank [or black] ) then the server is up and running.
Try using your hostname instead of localhost.
See if you're using a proxy and not skipping the local addresses.
Also you can see what's the executable that starts the home page and see if it could start successfully.

Thanks for the response guys.
I finally figured out how to solve the issue, but not really the root cause.
Problem 1 - Can not login to oracle admin console.
It was the problem with not adding 127.0.0.1 in the IE intranet sites.
Go to tools>internet options>security>local intranet sites>advanced>
add http://127.0.0.1:8080/apex in the list.
It works fine after this.
But if I go back to the same place again and see the sites, I cant find the url I added sometimes back... Dont know why that is happening. May be some company security is messing up.
Anyways the admin console is now coming up.
Problem 2 - Cannot connect using SQL Developer.
After I did the fix for problem 1, this is also magically working.
I still don't know how security settings in IE affects SQL Developer?
Any comments on this?

hey guys one important fact if u r using IE7 (explorer7) then u wd face certain problem in using 10g, such as not displaying home page.

For Windows 8 simply click on Get Started With OracleXE.... When internet explorer opens up, select the View on the desktop option in the Page View icon (icon with a wrench).
You should now be able to view your page.

I had a similar problem, I was able to connect to SQLPLUS using terminal but on access in browser as it was showing error as you have described. So, I went back to terminal and mounted my database using
startup
and it resolved my problem. This might be the case.

Getting login failed for sa when I haven't changed the password

I've been developing a winforms app tied to sql server. I haven't rebooted in a while. Today i rebooted and now I can't log into sql. I used every account I know and their passwords including one that was working just before i rebooted and i get a 'Login failed' . I did take the database I use offline just before starting and I do have backups before then.
thoughts on what happened? Is there a way to bring the database back online OR somehow find out what passwords are? I even tried using windows authenication with me as an admin on the box AND sa (Yes, bad) and still no dice.

:-/ That's a rough place to be ... I wish you luck. Check out this blog post, not sure if you're using sql 2k5 or not, but if so, it may be helpful:
http://blogs.msdn.com/raulga/archive/2007/07/12/disaster-recovery-what-to-do-when-the-sa-account-password-is-lost-in-sql-server-2005.aspx

Have you checked to make sure that the service is actually running? Also are you trying to connect using IPC, TCPIP or named pipes? Whichever way make sure it's enabled in the configuration tools.
Since admin's on the box are SQL admins the only thing I can think of is that the service is not running.