I don't know if this is the right place to ask, but I have search everywhere for the solution to this problem.
I used to have Netbeans 8.0 32-bit, Java 7 32-bit and MSSQL 2012. I already set up several connection in Server/Database in Netbeans and it was working perfectly. When I install Android Studio it required 64-bit version of Java so I uninstall my old version and install Java 8 64-bit. But Netbeans cannot detect the new version so I uninstall it and install Netbeans 8.1 64-bit. But when I try to connect using my old connection or even create new one, it always say: "Unable to connect. Connection refuse: connect. Verify the connection properties." My access to MSSQL stay the same, using the same username and password, already check the TCP/IP of MSSQL to be 1433, and turn off windows firewall. The only thing I don't know how to check is the host, which used to be 127.0.0.1.
Any way to solve this problem? Should I reverse my Java and Netbeans to 32-bit? Appreciate any help
Connecting to MSSQL using NetBeans
Follow the steps given in this link
More resources which are available on SO are here
One thing to note here is that the JDBC-ODBC Bridge has been removed from Java 8.
Related
While installing mysql , I changed the port no from 3306 to 3305.
Now I am trying to connect Java project in netbeans ide to mysql but it ain't working even though I tried connecting with both the port numbers
change it back to 3306, because it is the default port number for MySql. If the error remains unsolved try to reinstall it.
I need to connect over the internet with the Android client to Oracle PL/SQL database. (With static ip or with the host name).
But already using java client over the year with oracle. And I don't want to go for another database for implementing (Because I already written most complex procedures.,)
And that java client server connection happening via LAN connections only (But the system has the static ip and not used for this. Because LAN communication works perfectly).
Please tell me the process what I have to take.
Note: I am using Oracle 10g (10.2.0.5.0) and Latest Version of java (1.8).
If Possible: Please Provide a link for ojdbc drivers(Don't know which driver version used for Android).
Thanks in advance.
I have a Mac running OS X 10.9 with Java 1.7 using Eclipse Luna. I also have MySQL and MySQL Workbench. However, my programming subject only teaches JDBC using SQL Server. I don't mind learning how to use JDBC with MySQL as the DBMS. But I was wondering if I can connect my app to a virtual machine running Windows 7 with SQL Server 2008 on Virtualbox?
TL;DR:
Java web app (Mac) <---connect---> SQL Server (Virtualbox Windows 7), possible?
Of curse you can.
You will have to configure some port forwarding from your VirtualBox and maybe Windows itself.
I'm attempting to get a development environment up and running on my OSX laptop, creating JSPs within Eclipse, running with a Tomcat server, and connecting to an Oracle database.
Eclipse and Tomcat are playing nice together, and I can make JSPs and so forth. The hard part now is getting an Oracle database up and running on Mountain Lion, and getting Eclipse to connect to it.
After extensive Googling, I have found a number of resources:
http://dimitrisli.wordpress.com/2012/08/08/how-to-install-oracle-database-on-mac-os-any-version/
http://barrymcgillin.blogspot.com/2011/12/using-oracle-developer-days-virtualbox.html
(or even https://docs.google.com/document/d/1Th5MSIhS13YIJYCD8W1GLnOQEfrfov-92-He1cluTec/pub)
Following these (rather thorough) guides, I have downloaded the latest Virtual Machine from Oracle, here:
http://www.oracle.com/technetwork/database/enterprise-edition/databaseappdev-vm-161299.html
Note: All three of the above tutorials use a slightly older version of the VM, which has Oracle DB 10 or 11, but the one available now is 12c. The new one also has a different version of Oracle Linux, and probably some other differences. Various usernames and passwords seem to be slightly different.
I installed VirtualBox, loaded in the VM, brought it online. I have the Network settings configured with just a NAT adapter, with the adapter type as "PCnet-FAST III", and port forwarding from 127.0.0.1 to 10.0.4.15 on port 1521 to 1521 and 2222 to 22.
Now, if I open Terminal on my host machine, I can SSH into my VM via: ssh -p 2222 oracle#localhost. I get the Terminal in the VM, and it gives me the same welcome message I get when I first boot up the VM in VirtualBox. Also, I can ping localhost or 127.0.0.1 and it responds with a variable but short lag.
Based on this I can only assume that my VM is working, and that my port forwarding (which is laid out in all 3 of the tutorials I linked to up there) is in good shape.
Now comes the part where I would want to connect Eclipse to the Oracle database that's within the VM. If you look under the first tutorial, dimitrisli sets up IntelliJ with a datasource pointing to the VM. I want to do the same within Eclipse.
I am new to Eclipse, so I looked around for exactly how to do this, and I came up with:
1) Make a new Database Driver.
I downloaded the JDBC for Oracle Database 12c, JDK 7, from Oracle, here. I stuck the .jar file in my Documents folder (in case that's wrong). Within Eclipse I made a new Database Driver, based off one of the other Oracle Driver templates, and changed the settings. Under "Driver Files" I pointed to my ojdbc7.jar file, and under "Properties" I have the following--let me know if this is wrong:
Catalog: USER
Connection URL: jdbc:oracle:thin:#localhost:1521:orcl
Database Name: pdb1
Driver Class: oracle.jdbc.OracleDriver
Password:
User ID:
I tried to use what came in the Oracle Driver template and just tweak to match my exact scenario (based on what was said in the walkthroughs and what I could divine from poking around the modern version of the VM).
2) Make a new Database Connection.
When I go to make a new Database Connection, I go to the Driver Properties area, and I can pick my custom Driver. There is also a Properties field, which I enter the following into: (some of it seems to overwrite or duplicate what I typed in when I made the Driver itself?)
SID: orcl
Host: 127.0.0.1
Port Number: 1521
User Name: hr // Gotten from one of the tutorials. Have also tried 'system/oracle', neither works yet.
Password: oracle
Connection URL: jdbc:oracle:thin:#127.0.0.1:1521:orcl // Immutable, set by the Driver I suppose.
Catalog: User
When I click Test Connection, it hangs for a while and then I get a 'Ping failed!' error, with details:
java.sql.SQLRecoverableException: IO Error: Socket read timed out
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:673)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:715)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:385)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:30)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:564)
at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.createConnection(JDBCConnection.java:298)
at org.eclipse.datatools.connectivity.DriverConnectionBase.internalCreateConnection(DriverConnectionBase.java:105)
at org.eclipse.datatools.connectivity.DriverConnectionBase.open(DriverConnectionBase.java:54)
at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.open(JDBCConnection.java:81)
at org.eclipse.datatools.enablement.internal.oracle.JDBCOracleConnectionFactory.createConnection(JDBCOracleConnectionFactory.java:27)
at org.eclipse.datatools.connectivity.internal.ConnectionFactoryProvider.createConnection(ConnectionFactoryProvider.java:83)
at org.eclipse.datatools.connectivity.internal.ConnectionProfile.createConnection(ConnectionProfile.java:359)
at org.eclipse.datatools.connectivity.ui.PingJob.createTestConnection(PingJob.java:76)
at org.eclipse.datatools.connectivity.ui.PingJob.run(PingJob.java:59)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
Caused by: oracle.net.ns.NetException: Socket read timed out
at oracle.net.ns.Packet.receive(Packet.java:350)
at oracle.net.ns.NSProtocolStream.negotiateConnection(NSProtocolStream.java:153)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:263)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1360)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:486)
... 14 more
Unfortunately, being new to Java and Eclipse and Oracle DB, I'm not quite sure what to do with this, and I have been poking around for several hours trying to determine what could be wrong. I'm hoping someone with some experience on this can point me in the right direction.
(Oh, and I'm not an inexperienced developer--just new to these tools.)
Thanks!
I solved my issue, after roughly 6 or 7 hours wasted.
Thanks to this post:
Virtualbox "port forward" from Guest to Host
And specifically to the comment from #Nicholas which made me realize that I had deactivated my Mac's firewall, but not the firewall in the guest OS. Turning that off made everything work suddenly.
I suppose that the default configuration of the guest OS's firewall did allow for SSH on port 2222, as that worked fine even with the firewall in place, which served to mislead me into thinking that there was something wrong with my database driver or connection.
Hopefully this will benefit posterity.
EDIT:
As #HarpreetDawar mentions, the correct connection string to access the database is:
jdbc:oracle:thin:#localhost:1521/PDB1
The one that I was using, ending in :orcl instead of /PDB1, connects to the "container database". I don't fully understand Oracle 12c and the "pluggable database" implementation, but the rough idea is that you can have multiple databases within a single one, and you can turn them on and off by plugging/unplugging them. Hence, "PDB1", Pluggable Database 1.
If you connect to the Container, you will find that you are unable to create a new User/Schema without prefixing it with "C##", which is a tad awkward. That's because the Container is not meant to be used as a normal DB. You connect to the Container to plug/unplug the pluggable dbs (and other things, no doubt).
So if you want to connect to the Container, use a colon and the "SID" (orcl in the VM) in the connection string, and if you want to connect to a Pluggable, use a forward slash and the "Service Name" (PDB1 in the VM) in the connection string.
Anyway, this is additional data that I learned after solving my original problem.
One more thing! A note on port forwarding.
Let's say you now have your VM up and running, and you can connect to your Oracle DB properly, etc. But you have a friend who wants to use the DB with you? Well, that's easy. He should just use the same connection string, with your IP address instead of localhost, and the port forwarding that you set up in VirtualBox should send his connection (using port 1521) straight into your VM. Right?
Well, if you set up your Port Forwarding as From: 127.0.0.1, it won't work, because your buddy's connection is going to your external IP address. So add an additional port forwarding setting, from your external IP address to your VM. Then it will work great!
-Matt
I am the author of the first guide Matt Mc is quoting and taking the liberty to post my comment to his answer as a separate answer for visibility purposes.
I've initially written this guide ~ 2 years ago explaining in detail the process to get the Oracle 11gR2 installed on a Mac using VirtualBox.
Yesterday (25 Apr 14), I've upgraded the same guide outlining all the extra steps needed to get Oracle 12cR1 installed on a Mac using VirtualBox.
Use the following url
url = jdbc:oracle:thin:#//127.0.01:1521/PDB1
to make it work.
I didn't know where to write something about this and decided to do it here.
After loooong time debugging my program I could find out that calling Driver.getConnection(string, string, string) hangs the calling thread. Why(?), I really don't know, but I could find out that this happens with java 1.6.0_29 and not with java 1.6.0_26.
Full enviroment:
OS: Tested on both redhat 6.1 and Windows 2008
Driver: MS SQL Server JDBC Driver version 3.0.1301.101
Java Versions: 1.6.0_26 and 1.6.0_29
As I previously told it works with 1.6.0_26.
Is there anyone that has any idea what's possibly causing this? Maybe some developer? :p
Best regards,
Rui
I encountered exactly the same behaviour:
I use both Oracle XE and MS SQL Server Express on my Windows 7 64bit PC - I upgraded to java 1.6.0_29 from 1.6.0_27 (the x64 version) and was surprised to see that the same programs where able to connect to Oracle XE but not to MS SQL Server...
I traced down the problem to javax.sql.DataSource.getConnection() where it was hanging forever - because this is just an interface, the jdbc drivers raised my suspicion...
I'm using the MS SQL Server JDBC Driver 3.0.1301.202 and I even updated to SQL Server CTP (the "community technical preview") 4.0.1722.1 because my suspicion was that it has to do something with the jdbc driver - but no success: still hanging!
My workaround was to downgrade to 1.6.0_27 and -- bang: everything was fine again!
best regards
Erich
Reproduced:
Problem occurs with combination of
SQL driver 2.0
SQL driver 3.0
SQL driver 4.0 CTP 3
jTDS SQL Driver 1.2.5
SQL server 2008R2
Java 1.6.0_29
Change either SQL server version (tested on 2005 & 2008) or Java version (1.6.0_27, 1.7.0_1), and the problem doesn't occur anymore.
Client / Server OS: Windows 2008R2
Added to the Java Bug Database and is being worked on by Oracle.
Crossposted on Microsoft MSDN Data Access Forum (accepted answer: upgrade to java 7) and Oracle Java JDBC Forums (information that is added here, is also added to the Java Bug Database).
See the solution here
https://forums.oracle.com/forums/thread.jspa?messageID=9954398&tstart=0
http://social.msdn.microsoft.com/Forums/en/sqldataaccess/thread/97dce8fd-6487-4bca-80b0-492167db3e0d
"Apparently, this is related to SSL use and can be mitigated by replacing the jsse.jar in the jre/lib with that from an earlier version, for instance out of the 1.6.0_27 release. I've been confused by 1.6.0_29 working with MS JDBC and older SQL Server '05 setups which are not doing secure connections. All the newer servers (SQL Server '08 R2) fail as they require SSL and Java 1.6.0_29 does not work using jTDS or MS JDBC in this case."
As an FYI, it appears that there's a new step build #30 in the 1.6 family which fixes the issue:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7103725
I have the same hang problem, and only with java 1.6.0_29. I noticed that if I upgrade to 7.1 the problem goes away
I am so happy that I have found this forum. I had the same problem on upgrade (I actually upgraded from 1.6.0_22 to 1.7.1, then downgraded to 1.6.0_29, when the problem has occurred.
One more thing I have noticed : if I use 1.6.0_29 jre, it fails, but if I use 1.6.0_29 jdk, it works... I spent about a day trying to figure why eclipse (which was using the jre) was failing while myEclipse (which was using the jdk) was working....
How can a bug be introduced to such a late release ? (I am in the process of making a java production version recommendation).
Same problem here (SQLJDBC4, MsSQL 2008 R2, JDK1.6.0.29), but after updating to 1.6.0.30 problem was solved...
So it should be a critical bug in the DriverManager of 1.6.0.29
Upgrading to 1.6.0_30 also worked for me. Microsoft has released a statement announcing the fix in 2012 Q1. It looks like it's a Java vulnerability (BEAST).
I had the exact same issue where jBoss would hang on driver.getConnection(). However, I was using jBoss EAP 5.1, java 1.6.0_37x64, Sql Server 2005, and jtds1.2.5 as my jdbc driver.
The work around I had to use was a jvm setting at startup: -Djsse.enableCBCProtection=false and that resolved it.
I don't consider this a fix, but rather a work-around at this point.
I did find a bug: 7105007 : Microsoft & jTDS JDBC driver broken after update to 1.6.0_29 that was very similar, but had a different cause. What was interesting was that it showed up on both the MS drivers and jtds drivers.