Solved

SQL Developer frequently disconnecting

Posted on 2014-10-21
13
1,595 Views
Last Modified: 2014-10-23
I connect with SQL developer on my Windows 7 machine to my server Centos 6.5 running Oracle XE 11G.

I am having an issue where SQL Developer is frequently disconnecting if I don't run a query or do anything for about few minutes. I keep having to reconnect.

Is there anyway to fix this? Thanks.
0
Comment
Question by:sysautomation
  • 6
  • 4
  • 3
13 Comments
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40395219
I don't experience this, is your CentOS virtual?

You could try this keep alive plugin: https://scristalli.github.io/SQL-Developer-4-keepalive/
0
 

Author Comment

by:sysautomation
ID: 40395226
Yes my CentOS is virtual
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40395254
The it's probably the virtual env that's causing this, do you have other connections to the same server that disconnect as well?
0
Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

 

Author Comment

by:sysautomation
ID: 40395265
Ssh doesn't disconnect. I am using Xen
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40395277
Try the plugin or enable DBMS output and set polling frequency to one minute.
0
 
LVL 35

Accepted Solution

by:
johnsone earned 500 total points
ID: 40395279
I would set the SQLNET.EXPIRE_TIME parameter in the sqlnet.ora file on the client and the server.

Documentation for the parameter is here -> http://docs.oracle.com/cd/E11882_01/network.112/e41945/profile.htm#sthref823

It can cause disconnects.
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40395296
@johnsone - Interesting, I never set that parameter, no disconnects for me. Think it's a server-only parameter btw
0
 
LVL 35

Expert Comment

by:johnsone
ID: 40395305
It has a default value which works most of the time, but it can be a cause for this.

I do believe it is a server only parameter, but it never hurts to set it on both sides.
0
 

Author Comment

by:sysautomation
ID: 40395715
There's no file sqlnet.ora in $ ORACLE_HOME/network/admin in XE.
I checked several XE servers.
0
 
LVL 35

Expert Comment

by:johnsone
ID: 40396570
No file just means you are taking all the defaults.  You can create the file and put the one line in it.
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40399357
No closing  comment, means that the expire_time setting works?
0
 

Author Comment

by:sysautomation
ID: 40399456
I did it on the server and informed the developer. I haven't received his feedback yet.
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40399748
>> I haven't received his feedback yet
Hmm, would have been nice if you closed after confirmation. If the setting doesn't work we may need to re-open this question for you ;)
0

Featured Post

Three Reasons Why Backup is Strategic

Backup is strategic to your business because your data is strategic to your business. Without backup, your business will fail. This white paper explains why it is vital for you to design and immediately execute a backup strategy to protect 100 percent of your data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
python - find anything after $ question. 9 51
why truncate is faster than delete in oracle ? 4 50
Certificate Request CentOS/Apache 1 23
check the file dates in unix 14 29
How to Create User-Defined Aggregates in Oracle Before we begin creating these things, what are user-defined aggregates?  They are a feature introduced in Oracle 9i that allows a developer to create his or her own functions like "SUM", "AVG", and…
When it comes to protecting Oracle Database servers and systems, there are a ton of myths out there. Here are the most common.
This video shows how to copy a database user from one database to another user DBMS_METADATA.  It also shows how to copy a user's permissions and discusses password hash differences between Oracle 10g and 11g.
This video shows how to configure and send email from and Oracle database using both UTL_SMTP and UTL_MAIL, as well as comparing UTL_SMTP to a manual SMTP conversation with a mail server.

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question