I'm using JDev 11.1.2.3.0 (on OSX 10.8) and I try connect to an external DB.
When I try to make a connection in SQL Developer everything works fine but when I use the same connection info in JDeveloper it just doesn't want to connect.
What could be the problem?
Edit:
Exporting and importing the connection also doesn't work.
The two programs use a different connection mechanism. You can define proxy setting separately for each program by going to Tools>Preferences>Web Browser and Proxy. Make sure JDev has the same settings as SQLDev has
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We have an Oracle server set up and are using TCP with SSL as connection. This setup was made with the assistant wizard and we used the default settings pretty much everywhere (which also means that no tnsnames.ora or listener.ora exist). lsnrctl status shows that the correct ports are listening.
We are trying to connect to this database via DBeaver and SQuirrel SQL but cannot get it to work. We have set the vmargs for the programs to contain the certificate of the server (e.g. dbeaver.exe -vmargs -Djavax.net.ssl.trustStore=C:/...keystore.jks -Djavax.net.ssl.trustStorePassword=password -Djavax.net.ssl.trustStoreType=JKS), which works fine.
Connecting to the database with a concrete JDBC URL string (jdbc:oracle:thin:#(DESCRIPTION=(ADDRESS=(PROTOCOL=TCPS)(HOST=IP)(PORT=5500))(CONNECT_DATA=(SERVICE_NAME=testdb)))) does not work and times out after 60 seconds without a proper error (IO Error: Got minus one from a read call). We have tried pretty much everything and cannot get it to work.
The ports are correctly assigned, the database can successfully get accessed with the normal TCP protocol and port 1521.jdbc:oracle:thin:#(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=IP)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=testdb)))
Are we missing steps? There don't seem to be any firewall issues. The certificates seem to be working fine as well, but we cannot connect with any of the programs (or sqlplus via command line).
Anyone know what could be the problem? Thanks!
Can you check out the SSL blog or our OTN page for step-by-step instructions? If you are using TLSv1.2 then the JDK version and JDBC driver versions are very important.
In the end I got it to work. There are various sites online that show you how it's done. I used this one:
https://database.edorex.ch/blog/database-connection-with-a-certificate/
Getting the wallets set up, certificates set up and the user set up in the database were the most important steps. Additionally, I had to separate the server and client machines. The server is now on a VM and it works that way, I couldn't get it to work having both on the same machine.
I am new to Programming. I am learning JAVA and for DB i wanted to learn Oracle so I downloaded sqldeveloper from Oracle website. It was a zip file so I didnot have to install anything, simply extracted it. When I open the sqldeveloper and try to make a new connection, it shows error.
Test failed: IO Error: The network adapter could not establish the connection.
I am not sure what to put in username and pwd. and i am also not sure if i have to connect this to jdk or jre or set classpath for database.
Can anyone help me?? I have uploaded the snapshot of the error too.
You downloaded a client.
You did NOT download the server component though - the actual database.
SQL Developer just allows you to work with an existing database.
No worries, you're not that far away. You have several options.
Oracle Database Express Edition (XE) - it's completely free.
We also have a VirtualBox appliance you can use for personal learning purposes, also completely free.
I talk about this and give step by step instructions here.
Check if oracle service, TNSListener service is up and running before trying to make any new connection from sql developer.
Even if TNS Service is down , connection can not be established with oracle instance.
I am new to Programming. I am learning JAVA and for DB i wanted to learn Oracle so I downloaded sqldeveloper from Oracle website. It was a zip file so I didnot have to install anything, simply extracted it. When I open the sqldeveloper and try to make a new connection, it shows error.
Test failed: IO Error: The network adapter could not establish the connection.
I am not sure what to put in username and pwd. and i am also not sure if i have to connect this to jdk or jre or set classpath for database.
Can anyone help me?? I have uploaded the snapshot of the error too.
You downloaded a client.
You did NOT download the server component though - the actual database.
SQL Developer just allows you to work with an existing database.
No worries, you're not that far away. You have several options.
Oracle Database Express Edition (XE) - it's completely free.
We also have a VirtualBox appliance you can use for personal learning purposes, also completely free.
I talk about this and give step by step instructions here.
Check if oracle service, TNSListener service is up and running before trying to make any new connection from sql developer.
Even if TNS Service is down , connection can not be established with oracle instance.
I have downloaded the oracle instant client 12_1 but i'm unable to connect to the oracle database.when i tried using sql developer it is displaying the following error.
The Network could not be established.
I'm using windows 7 and my Oracle_home path is defautly set in the system variables as
path
E:\app\dell\product\11.2.0\dbhome\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\
I suspect you've begun the headache of messing with the connection string. I seriously recommend you find the option in SQL Developer that will allow you to connect directly to the server (bypass TNSNAMES) and use EZ Connect. The connection string will look like this:
server.whatevz.com:port/sidname
I don't use SQL Developer, so I can't point to it specifically, but I have used it and configured it as such, and it works fine. I'm a fan of PL/SQL Developer (All Around Automation) myself.
I'm using SSH tunneling to connect from a Windows 7 machine to a remote Postgres database.
The tunnel works fine when I use pgAdmin to connect to the remote database. However, I haven't managed to set up an ODBC DSN to connect to the remote database.
I'm creating a System DSN with the same server address/username/password/port/ssl mode as pgAdmin but when I click "Test" I get: "Could not connect to server; No connection could be made because the target machine actively refused it."
Any ideas on where to start debugging? I've ruled out Windows Firewall and remote server configuration, since I can connect with the exact same information in pgAdmin.
Edit
The problem resolved itself after reinstalling Windows.
When debugging this the first thing to do is to start testing the PostgreSQL server with the psql command line utility. This avoids issues of drivers etc to see what is actually going on. Generally speaking my troubleshooting process is:
Can I ping the server?
Can I connect with psql?
When I test my connection via the control panel, does it work?
Now, assuming the problem is on #2, the first thing I would do is try disabling firewalls on both sides (they can be brought up and tuned after trying with both down). This rules out misbehaving firewalls and if it shows this to be a problem then you have the answer on where to troubleshoot.
In my experience Windows firewall can cause all manner of problems. I have even seen it block web pages halfway through the web page. I don't think you can rule out Windows Firewall based on the information you have provided.
If this happens again, the first things to do include disabling both any antivirus software and firewalls.
The other possibility would be a bad ODBC config (maybe port 5423 instead of 5432) or a badly installed DLL of some sort. The latter may be fixed (or not) using sfc /scannow or reinstalling the odbc driver, or other actions.