Cannot Establish New Connection

Hello all, I have quite a peculiar problem regarding the what I've come to find fairly common error, "Network Adapter could not establish the connection."
Now, before you close the tab/page/browser, hear me out -- I've looked through at least two dozen threads with this topic, but none share the same situation I have, and none have supplied any help whatsoever.
I'm a college student in a databasing class of 12 other students, where the instructor created a sql developer setup batch file and package, so that all copies of SQL Developer would be absolutely identical. As well, all machines within this classroom are absolutely identical as well, being imaged school harddrives in identical hardware computers. Within the classroom environment, we use database connections on localhost for the purpose of training. The instructor wrote the batch file to set the listener and start the service. Somehow, I receive the above error while no other person within the room has a problem.
I have verified that the listener is set to listen on localhost and port 1521, and that I am connecting to localhost and port 1521.
- I have attempted changing the listening port.
- I have attempted changing the listening IP to 127.0.01, this machine's network IP, this machine's internet IP, this machine's name, and this machine's qualified domain name.
I have verified that the listener service is operating.
- I have attempted stopping and starting the service.
- I have attempted changing the service to manual startup, rebooting the computer, and restarting manually.
I have verified that the network adapter is operational.
- Used Ipconfig /release and /renew
- Can ping self, as well as all other computers in room.
- Can ping the default gateway
- Can tracert the default gateway
- Have DNS connectivity
I also attempted a fresh copy downloaded from oracle on my personal laptop, and manually used the same settings as the instructor prescribed. I received the same error, where I attempted all items in the above list to no avail. I then moved to another machine in the room, which also did nothing, and finally I moved to a machine that another student had already used, which worked fine.
Working at my own workstation now, I finally attempted simply running as administrator, which attained the same error, and I rolled back my version of Java, which still received the same error.
At this point, I have exhausted everything I know to do, and am quickly becoming frustrated. Neither my workstation nor another unused computer within the room work. My personal laptop not connecting doesn't bother me. If anyone at all has any advice whatsoever, I'm all ears. I'd even make sure it's plugged in at this point.

Hi,
Windows XP is now 3 generations back, so this memory is growing dim, but if that is the OS version used in your class, then the problem could be related to lack of a loopback adapter. Here are a couple of (older) links that mention it:
Oracle Forum ->Oracle Database -> Installation (points to page 2 of 3):
SQL Developer: "network adapter could not establish the connection"
Other Forum -> DBA Forum
http://dbaforums.org/oracle/index.php?showtopic=19831
There is mention made that the loopback adapter should be installed prior to database installation.
Hope this helps,
Gary

Similar Messages

Establish new connection in SQL developer

hi,
i am trying to establish new connection in sql developer, i m just new in orcale and installed 10g , from where i can get all the required information for new connection like HOSTNAME, port , sid etc
pls someone can help me on this

Depends. All this was presented to you when installing. If you didn't wrote anything down...
If you accepted all defaults, it still depends on your DB version (which?).
K.

I cannot access facebook on my MacBook Pro. I am able to access every other website. When trying to access facebook it says that page cannot be displayed as safari cannot establish a connection.

I cannot access facebook on my MacBook Pro. I am able to access every other website. When trying to access facebook it says that page cannot be displayed as safari cannot establish a connection. I was able to access it just fine few weeks ago....
Please help!

Hi Justysiag,
If you are having issues opening a particular web site in Safari on your MacBook Pro, you may want to follow the steps in this article to see if you can resolve the issue -
Safari 7 (Mavericks): If Safari can’t open a website
http://support.apple.com/kb/PH17169
Thanks for using Apple Support Communities.
Best,
Brett L

I'm getting a message saying that Firefox cannot establish a connection to google.

Something happened to Firefox yesterday - and now all I can get is a message saying that Firefox cannot establish a connection to google.
I searched for help via IE and I tried all the fixes suggested. I even restored my computer to an earlier state- that didn't change anything; set network settings to No Proxy; then I uninstalled Firefox, deleted all the program files, and then reinstalled - but nothing seems to work.
I really don't want to have to use IE, and I'm not technical enough to really know what I'm doing at this point. I'm afraid I might have lost all my bookmarks, screwed something(s) up on my computer etc.
This is SOOOOOOOOOO irritating and frustrating - can someone help me please.

Sorry to hear about your bookmarks. When you uninstalled Firefox, did you tell it to remove your personal data? That unfortunately would be irreversible, so hopefully you didn't do that.
You mentioned deleting some folders. Your bookmarks and other Firefox settings data normally are stored in a hidden folder under C:\Users\''username''\AppData\Roaming\Mozilla\Firefox. I'm not sure whether you dug down and deleted folders under there. If so, please check the Windows Recycle bin and try to restore the Mozilla\Firefox folder to a safe location (e.g., Documents).
Did you use Firefox's Reset feature at any point? That would have moved your old settings folder to your desktop, inside a folder named Old Firefox Data. Hold on to that if you have it.
Regarding Google, I wonder whether your computer has contracted any malware infections that might be modifying your access. You could try the tools in our support article [[Troubleshoot Firefox issues caused by malware]]. Those are free and take a considerable amount of time to run. If they seem to finish quickly and require a payment for cleaning, you may have a serious infection. In that case, try the specialized malware cleanup forums listed in the article.

Cannot establish DB connection to JNDI :

Hii,
While running full load graph for Ebs Extensions for Endeca, I'm getting the following error :
2014-07-07 18:29:11,334 ERROR 28853 [WatchDog] Node ERROR_AUDIT_UPDATE finished with status: ERROR caused by: Component pre-execute initialization failed.
2014-07-07 18:29:11,334 ERROR 28853 [WatchDog] Node ERROR_AUDIT_UPDATE error details:
Element [ERROR_AUDIT_UPDATE:Error Audit Update]-Component pre-execute initialization failed.
        at org.jetel.graph.Node.run(Node.java:446)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:722)
Caused by: org.jetel.exception.JetelException: Cannot establish DB connection to JNDI:jdbc/ebsdb While trying to lookup 'jdbc.ebsdb' didn't find subcontext 'jdbc'. Resolved '' caused by: javax.naming.NameNotFoundException: While trying to lookup 'jdbc.ebsdb' didn't find subcontext 'jdbc'. Resolved ''; remaining name 'jdbc/ebsdb'
        at org.jetel.component.DBExecute.initConnection(DBExecute.java:481)
        at org.jetel.component.DBExecute.preExecute(DBExecute.java:415)
        at org.jetel.graph.Node.run(Node.java:444)
        ... 3 more
Caused by: org.jetel.exception.JetelException: Cannot establish DB connection to JNDI:jdbc/ebsdb While trying to lookup 'jdbc.ebsdb' didn't find subcontext 'jdbc'. Resolved '' caused by: javax.naming.NameNotFoundException: While trying to lookup 'jdbc.ebsdb' didn't find subcontext 'jdbc'. Resolved ''; remaining name 'jdbc/ebsdb'
        at org.jetel.connection.jdbc.DBConnection.connect(DBConnection.java:484)
        at org.jetel.connection.jdbc.DBConnection.getConnection(DBConnection.java:465)
        at org.jetel.component.DBExecute.initConnection(DBExecute.java:478)
        ... 5 more
Caused by: javax.naming.NameNotFoundException: While trying to lookup 'jdbc.ebsdb' didn't find subcontext 'jdbc'. Resolved ''; remaining name 'jdbc/ebsdb'
        at weblogic.jndi.internal.BasicNamingNode.newNameNotFoundException(BasicNamingNode.java:1139)
        at weblogic.jndi.internal.BasicNamingNode.lookupHere(BasicNamingNode.java:247)
        at weblogic.jndi.internal.ServerNamingNode.lookupHere(ServerNamingNode.java:182)
        at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:206)
        at weblogic.jndi.internal.WLEventContextImpl.lookup(WLEventContextImpl.java:254)
        at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:412)
        at javax.naming.InitialContext.lookup(InitialContext.java:411)
        at org.jetel.connection.jdbc.DBConnection.connect(DBConnection.java:477)
        ... 7 more
2014-07-07 18:29:11,347 ERROR 28853 [WatchDog] !!! Phase finished with error - stopping graph run !!!
Kindly help regarding the above issue.
Also , I have the following file in 'pending' directory . Does it have anything to do with the above issue?
/u01/Oracle/Middleware/user_projects/domains/integrator_domain/pending/jdbc/ebsdb-jdbc.xml
Please suggest something.
Thanks
Palak

Verify that you are running WebLogic with a Oracle HotSpot JDK version 1.5 or later. Refer also to Doc ID 1549013.1.

Cannot establish Bluetooth connection between iphone4 and ipad2

I have an iphone4 which cannot connect via Bluetoooth with ipad2, even though I tried all that is said in Apple support , but still no success. Really cannot understand as my iphone4 connects to a Bluetooth ear piece which is of different make and these 2 piece's are from Apple but cannot establish a connection via Bluetooth. It's surprising. So please help and advice.
thanks Guys

The iPhone is not designed to Bluetooth pair with a computer or an iPad except for personal hotspot (sharing the phone's cellular internet connection). It can use Bluetooth for Handoff/Continuity and for Keynote Remote but the devices are not paired. More information: Bluetooth: Why can't I pair my iPhone or iPad with my computer?

Cannot establish wireless connection with WRT54G after power-off

My WRT54G (firmware v7.00.0) is connected to cable TV modem and
usually the wireless connection works fine, but after swiching off and later
on the power to WRT54G a laptop cannot establish WiFi connection to internet.
I can see in Odyssey software (for wireless communication) that my laptop
found the right network (SSID) but in status it says 'waiting for keys'.
I use WPA2 (TKIP). The laptop does not connect to internet.
When I connect it by cable (ethernet) the internet works fine, I have noticed
that by accessing the web-page utility of the router and simply clicking
save changes on wireless-settings page (without making any changes in
the settings) my laptop instantly establishes wireles connection and
everything works fine till next power swich-off.

Thanks for reply! I have my network in preffered, and the software/laptop locks on
the network (see it, says it have excellent signal strenght) and gives note
'waiting for keys' (the WPA2 encription key is in the settings - both of router and laptop client - Odyssey).
I've got firmware ver.7 so it is probably the latest.

Cannot establish network connection

Hi,
I have Asus M4A89GTD/PRO USB3 motherboard and I'd like to install Arch. But I cannot establish network connection. When I try dhcpcd or dhclient, request everytime times out.
Eth0:
05:00.0 Ethernet Controller: Realtek Semiconductor CO., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
dhcpcd:
dhcpcd: eth0: waiting for carrier
dhcpcd: timed out
I've tried r8169 and 8169too modules and none of them worked.
Thank you

Try to config network in /etc/rc.conf
HOSTNAME="arch"
#eth0="eth0 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255" <--- for static IP
eth0="dhcp"
INTERFACES=(eth0)
gateway="default gw 192.168.0.1"
ROUTES=(!gateway)
Wiki say: Tha gateway can usually ignore, though some users have reported the need to define it. Try config it
PS: Sure eth0 are your network card?

Cannot establish proxy connection: 502 Proxy Error ?

Im receiving a strange error message within GRID (Oracle 10.1.0.4.0/Aix5.2) every time I try and start/stop a Db on the ‘Startup/Shutdown:Specify Host and Target Database Credentials’
Cannot establish proxy connection: 502 Proxy Error ( The specified Secure Sockets Layer (SSL) port is not allowed. ISA Server is not configured to allow SSL requests from this port. Most Web browsers use port 443 for SSL requests. )
Whats causing this issue ?

In order for you to configure the Management Service to use a proxy server, this task is pretty similar as to configure a proxy server in a browser, you must declare the proxy server, its port and the exceptions where the proxy is to be skipped.
1. Edit the Oracle management server configuration file:
ORACLE_HOME/sysman/config/emoms.properties
2. Either add or comment out and configure these entries at the above referred file:
proxyHost=proxyhost.domain
proxyPort=proxy_port
dontProxyFor=.domain1, .domain2, .domain3, ...
3. You must rebounce your OMS so this file can be re-read.
This is the manual approach. This configuration can also be done at the same grid control at the configuration section.
~ Madrid
http://hrivera99.blogspot.com/

MacBook Pro "cannot establish secure connection"

MacBook Pro "cannot establish secure connection" can't connect to Internet, tried on two separate networks and via wifi and Ethernet. Any suggestions??
Mac book was connected and working then started giving error message "failed to establish secure connection" now cannot connect to Internet via any network. Either by wifi or Ethernet. However in network settings it says it is connected. iTunes also cannot connect so don't think it is a safari problem. Have also checked networks with other devices and the network itself seems to be working.
Have further problems with syncing phone (doesn't seem to registering removal of music, storage is not freeing up) but I am hoping that solving Internet connection may solve that problem as well
Apologies if i am posting in the wrong place!
Any suggestions greatly appreciated as I am stuck.

System Preferences > Date & Time
Enable "Set date & time automatically".
http://support.apple.com/kb/TA20405

Netflix cannot establish secure connection

Hi,
I used to be able to access my Netflix account without any issues (I used unblock us).
Now, it seems that everytime I click on to it, it comes up with netflix cannot establish secure connection.
I tried Safari and Chrome and the same problem.
I've tried to delete my history and reset my cache, but to no avail.
I'm using Safari Version 7.0.1 and my Mac OS X is Maverick (10.9.1).
Please help! I'm paying for both Netflix and Unblock via subscription and throwing money down the drain...

Disable or bypass "Unblock" and test.

When I click on the Mozilla Firefox internet icon, it cannot establish a connection to anything

I cannot access the internet using mozilla. It has a error message that says that "Firefox cannot establish a connection to the server ... "

See [[Firefox cannot load websites but other programs can]]. A common cause, as shown in that article, is a firewall blocking Firefox.

The application requester cannot establish the connection.(Address in use:

Hello All,
I am using AS/400 type 4 Driver to connect and i am getting this error for every 1 hr if i restart the server again it will run till 1 hr and this error will come so pls help me
java.sql.SQLException: The application requester cannot establish the connection.(connect (code=10055))
[6/10/03 11:39:37:109 GMT+05:30] 3bf0d9b9 SystemErr R      at com.ibm.as400.access.JDError.throwSQLException(JDError.java(Compiled Code))
[6/10/03 11:39:37:109 GMT+05:30] 3bf0d9b9 SystemErr R      at com.ibm.as400.access.AS400JDBCConnection.setProperties(AS400JDBCConnection.java(Inlined Compiled Code))
[6/10/03 11:39:37:109 GMT+05:30] 3bf0d9b9 SystemErr R      at com.ibm.as400.access.AS400JDBCDriver.prepareConnection(AS400JDBCDriver.java(Compiled Code))
[6/10/03 11:39:37:109 GMT+05:30] 3bf0d9b9 SystemErr R      at com.ibm.as400.access.AS400JDBCDriver.initializeConnection(AS400JDBCDriver.java(Compiled Code))
[6/10/03 11:39:37:109 GMT+05:30] 3bf0d9b9 SystemErr R      at com.ibm.as400.access.AS400JDBCDriver.connect(AS400JDBCDriver.java(Compiled Code))
[6/10/03 11:39:37:109 GMT+05:30] 3bf0d9b9 SystemErr R      at java.sql.DriverManager.getConnection(DriverManager.java(Compiled Code))
[6/10/03 11:39:37:109 GMT+05:30] 3bf0d9b9 SystemErr R      at java.sql.DriverManager.getConnection(DriverManager.java:194)

I don't know much about connecting to an AS/400 but what it looks like is that you have a connection already established to the machine and are trying to connect another one on top of it. I would check to see if you have a process that is not properly closing its connection to that machine.

Mac Firefox cannot establish a connection to the server at

I have a power PC G4 mac running OSX 10.5.8 and Firefox 3.6.10 and occasionally get the error message that Firefox cannot establish a connection to the server at ourhealthcoop.net or getshen.com and various others. How can I fix this and what is causing it? If it is a firewall, then how do I find the firewall and what do I do to "make things right"?

If Firefox cannot connect to any site, the problem may be a firewall blocking access. For details on that and other possible causes see [[Firefox cannot load websites but other programs can]].

Adobeconnect outlook add-ins version 3.5 cannot establish the connection with the server

i am using outlook 2010 and i have installed the outlook add-ins ver3.5 to my laptop. i was trying to login the server through add-ins with my login details. But it popup"cannot establish the connection to server, please check your server address and account", the server i am using is "intercall-apac.adobeconnect.com". Just want to know is there any port should be opened on the firewall?

Try putting https:// in the URL for the server instead of http:// (or check the box for a secure connection)

Cannot Establish New Connection

Similar Messages

Maybe you are looking for