SQL Developer 1.5.4: "Keep alive" setting to keep connections open?

Is there any way to configure SQL Developer 1.5.4 such that it "pings" the server every now then to keep the connection open?
It's very frustrating to be working on a script, step away from it for a while, and have SQL Developer freeze when trying to execute the next SQL statement.
What can I do?
My workaround--execute a "dummy" SQL statement like "select * from dual;" every now and then to keep a connection open.
Thanks.
Dana

I have had this problem till I had a RAM upgrade.
Since I have had the upgrade JDeveloper also responds well.
A way to check is via task manager, if PF usage is more than you physical RAM size it is a indicator that you need more RAM or shut down some application that is hogging memory.
Just to rule out if its not some other problem, have you tried working in SQL Developer running by itself or with one other program.
Regards
Edited by: io-into oracle on Jun 24, 2009 11:39 AM

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Why does JDBC keep connections open even though I close the resultsets?

I attached my program and my output. Please bear with me for the long output. My question here is why do the connections remain even though I closed the resultsets. I need to reuse my prepared statements, but don't want to keep the oracle sessions open. Is this possible? What do I need to do?
If you notice in the program, I have executed the query to find the number of open sessions 5 times.
1) After creating the connections
2) After creating the prepared statements
3) After executing them
4) After getString on the resultSets
5) After closing the resultsets.
And the sessions are still there even is Step 5 :-(
import java.sql.*;
* Title:
* Description:
* Copyright: Copyright (c) 2001
* Company:
* @author
* @version 1.0
public class Test {
String dburl = "jdbc:oracle:thin:@oracle92:1521:oracle92";
String query = "select s.username,s.sid ,s.logon_time, s.serial#,sql.sql_text"+
" from v$session s, v$sqltext sql where sql.address = "+
"s.sql_address and sql.hash_value = s.sql_hash_value "+
"and upper(s.username) like 'KRTEMP%'"+
" order by s.username ,s.sid ,s.serial# ,sql.piece" ;
// String query = "select s.username, s.sid ,s.logon_time, s.status from v$session s where upper(s.username) like 'KRTEMP%'";
public Test(int num) throws Exception {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection[] con = new Connection[num];
for(int i=0; i<num; i++) {
con[i] = DriverManager.getConnection(dburl, "krtemp", "krtemp");
executeQuery();
PreparedStatement[] ps = new PreparedStatement[num];
for(int i=0; i<num; i++) {
ps[i] = con.prepareStatement("select * from contact");
executeQuery();
ResultSet[] rs = new ResultSet[num];
for(int i=0; i<num; i++) {
rs[i] = ps[i].executeQuery();
executeQuery();
for(int i=0; i<num; i++) {
ResultSetMetaData meta = rs[i].getMetaData();
while(rs[i].next()) {
for(int j=1; j<=meta.getColumnCount(); j++) {
rs[i].getString(j);
executeQuery();
for(int i=0; i<num; i++) {
rs[i].close();
executeQuery();
private void executeQuery() throws Exception {
Connection con = DriverManager.getConnection(dburl, "krtemp", "krtemp");
PreparedStatement ps = con.prepareStatement(query);
ResultSet rs = ps.executeQuery();
ResultSetMetaData meta = rs.getMetaData();
System.out.println("-----");
while(rs.next()) {
for(int i=1; i<=meta.getColumnCount(); i++) {
System.out.print(rs.getString(i));
System.out.print(" ");
System.out.println();
System.out.println("-----");
public static void main(String[] args) throws Exception {
Test test = new Test(5);
The output is
KRTEMP 9 2005-06-27 17:09:30.0 5436 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS WH
ERE PARAMETER ='NLS_
KRTEMP 9 2005-06-27 17:09:30.0 5436 DATE_FORMAT'
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 105 2005-06-27 17:09:30.0 3296 DATE_FORMAT'
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 153 2005-06-27 17:09:30.0 31065 DATE_FORMAT'
KRTEMP 163 2005-06-27 17:09:30.0 3205 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 163 2005-06-27 17:09:30.0 3205 DATE_FORMAT'
KRTEMP 183 2005-06-27 17:09:30.0 3465 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 183 2005-06-27 17:09:30.0 3465 DATE_FORMAT'
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 256 2005-06-27 17:09:30.0 2718 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:30.0 2718 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:30.0 2718 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:30.0 2718 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 9 2005-06-27 17:09:30.0 5436 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS WH
ERE PARAMETER ='NLS_
KRTEMP 9 2005-06-27 17:09:30.0 5436 DATE_FORMAT'
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 105 2005-06-27 17:09:30.0 3296 DATE_FORMAT'
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 153 2005-06-27 17:09:30.0 31065 DATE_FORMAT'
KRTEMP 163 2005-06-27 17:09:30.0 3205 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 163 2005-06-27 17:09:30.0 3205 DATE_FORMAT'
KRTEMP 183 2005-06-27 17:09:30.0 3465 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 183 2005-06-27 17:09:30.0 3465 DATE_FORMAT'
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 256 2005-06-27 17:09:31.0 2783 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:31.0 2783 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:31.0 2783 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:31.0 2783 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 9 2005-06-27 17:09:30.0 5436 select * from contact
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 select * from contact
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 select * from contact
KRTEMP 163 2005-06-27 17:09:30.0 3205 select * from contact
KRTEMP 173 2005-06-27 17:09:31.0 3922 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 173 2005-06-27 17:09:31.0 3922 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 173 2005-06-27 17:09:31.0 3922 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 173 2005-06-27 17:09:31.0 3922 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 183 2005-06-27 17:09:30.0 3465 select * from contact
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 256 2005-06-27 17:09:31.0 2783 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:31.0 2783 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:31.0 2783 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:31.0 2783 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 9 2005-06-27 17:09:30.0 5436 select * from contact
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 select * from contact
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 select * from contact
KRTEMP 163 2005-06-27 17:09:30.0 3205 select * from contact
KRTEMP 183 2005-06-27 17:09:30.0 3465 select * from contact
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 204 2005-06-27 17:09:32.0 1478 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 204 2005-06-27 17:09:32.0 1478 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 204 2005-06-27 17:09:32.0 1478 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 204 2005-06-27 17:09:32.0 1478 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 256 2005-06-27 17:09:31.0 2783 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:31.0 2783 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:31.0 2783 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:31.0 2783 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece

Why do the connections stay open? Because you haven't closed them.
You answered your own question: obviously closing the ResultSet is NOT the same thing as closing the connection.
When you do a query, you want to get the connection, statement, and result set, load the data from the result set into an object or data structure, and then immediately close them all again in reverse order of creation. You want to keep the scope as narrow as possible. You want to use a connection pool to keep the cost of obtaining a connection down. You should leave caching of the PreparedStatements to the JDBC driver.
%

Workstations keeping connection open to the ZfD server

Hi,
I have the following situation:
NetWare 5.1 SP6 server, with ZENworks for Desktops 3.2 SP3 installed. We
use ZEN Imaging. Now, a lot of our workstations are keeping a conenction
open to the server. In Monitor, the Network Address shows the IP address
of our server. This makes it very hard for our administrators to keep
track on which PC is connected to the network at the moment.
How can I clear these connections, or better yet: how can I prevent them
from coming up ?
Thanks in advance.
Arjan

Arfman,
It appears that in the past few days you have not received a response to your posting. That concerns us, and has triggered this automated reply.
Has your problem been resolved? If not, you might try one of the following options:
- Do a search of our knowledgebase at http://support.novell.com/search/kb_index.jsp
- Check all of the other support tools and options available at http://support.novell.com in both the "free product support" and "paid product support" drop down boxes.
- You could also try posting your message again. Make sure it is posted in the correct newsgroup. (http://support.novell.com/forums)
If this is a reply to a duplicate posting, please ignore and accept our apologies and rest assured we will issue a stern reprimand to our posting bot.
Good luck!
Your Novell Product Support Forums Team
http://support.novell.com/forums/

Keeping Connection open...

If I have a thread that keeps a Conneciton open (or atleast monitors it and re-opens it if it closes for some reason) is this a good way to do it?
public void run(){
     //-----Loop indefinetly
     while(!interrupted()){
          //-----Connect to the database
          try{
              Class.forName("com.mysql.jdbc.Driver").newInstance();
              //Where ams is the parent object that has the Connection as one of it's properties
                    ams.setConnection(DriverManager.getConnection(ams.getMySqlConnectionString()));
              while(!ams.getConnection().isClosed()){sleep(1000);}
          //-----Display exception and sleep for a bit
          }catch(Exception e){try {sleep(1000);}catch (Exception ex){}}
}

I only need one connection so pooling seems to be an over the top way of keepign it open.
I just wanted to put a simple little thread around my Connection object checking if it is open every so often and if not reopening it... Do you still think pooling is the way to go?

Keep connection opened for loop

Hello Community!
I'm using JCO to connect a Flex application to a backend SAP System.
This is how I connect to the system:
    - Edit configuration file for SAP System
    - JCoDestination dest = JCoDestinationManager.getDestination(configurationFile)
    - JCoFunction func = dest.getRepository.getFunction('myFunction')
    - func.execute(dest)
I think that the connection is established when I execute the JCoFunction and then closes inmediatly after the execution is done.
The issue I'm having is that I have a RFC FM in SAP that is really fast (at least in SAP). I'm calling this FM via the JCo in a Loop and it's taking forever.
I think that the long response time comes from the connection... But don't know how to resolve it but creating a FM that call myfunction in a Loop and the returns it to Java...
Thanks for any help you can provide.
Regards,
BS_C3

By default JCo 3 uses connection pools. You can check the connection parameters in interface DestinationDataProvider. Here you can especially check out parameters jco.destination.expiration_time and jco.destination.expiration_check_period.
So connections are reused (not closed) as long as you don't create new destination objects with each call. Note that usually there's quite some overhead with the first invocation of an RFC call if you have to retrieve the metadata from a SAP repository. I.e. if you trace the calls you'll see that initially there's quite a few calls to figure out the function module interface of the called RFC and all corresponding parameters (e.g. if structures or tables are used those have to be retrieved as well). So you can gain some performance by adding the metadata of the used functions to the repository (or usage of a JCoCustomRepository and loading for example saved metadata before executing the RFC calls).
To check performance I'd enable tracing and possibly look at some of the other options for measuring performance (e.g. check out JCoDestination.setThroughput() and other options).
Cheers, harald

HOW TO OPEN MULTIPLE TABLES IN SQL DEVELOPER SIMULTANEOUSLY

hello i m new to sqldeveloper so plz dnt laugh if m asking silly question
HOW TO OPEN MULTIPLE TABLES IN SQL DEVELOPER SIMULTANEOUSLY

Use the 'pin' on your table editor
http://www.thatjeffsmith.com/archive/2011/11/sql-developer-quick-tip-pin-query-result-sets-and-plans/
Then open your 2nd table. If you want to see both at the same time, right-click on the table editor tab and select 'New Editor Tab Group'
Not a silly question, but no need to shout :)

SQL Developer Keep-Alive Extension Created!

Hi All,
I have created a keep-alive extension for SQL Developer as I have always wanted to prevent my connections from timing out. Hope this will become handy to some of you. The download file and instructions are hosted on Google Sites.
https://sites.google.com/site/keepaliveext/
Cheers,
MinChen

Hi Everyone,
Lately I have been getting questions on whether the extension is secure enough to be used as more often than not, a database would definitely contain confidential or sensitive information hence it is absolutely crucial that security is maintained and running external extensions does not seem reassuring. Here, I would like to write a bit on how to ensure that security is maintained when running third party extensions for SQL Developer.
The most secure approach is to scrutinize the source code of the extensions themselves if it is made available at all. If no source code is available, then it would take a different approach which is far more complex and won't to be covered here. Fortunately, extensions for SQL Developer are developed using Java and the beauty of it is that one could easily decompile the classes back into the source code. From there onwards, scrutinize the code thoroughly to ensure there is no rogue logic or any function that would "phone home" for whatever reason other than to check for updates. By practicing self code scrutiny, it would be the most reassuring. As I myself am every bit concerned about security, I do tend to extract out the source code of all the Firefox extensions I use and do a quick glance. ;)
With this, I hope more people will embrace the extensibility of SQL Developer and create more extensions for the community. SQL Developer is a great application and thanks to the team who created it and made it available at zero charge. :D
Cheers,
Min Chen
P.S. You can decompile Java classes using the free tool called JD-Gui which can be found at
[http://java.decompiler.free.fr/?q=jdgui]

SQL Developer 1.5.4: "Keep alive" setting to keep connections open?

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