connection of JDBC with oracle 9i database

[harshada patil]

how to make connection of JDBC with oracle 9i database? which driver should i install..?

[Soumyajit Hazra]

Use oracle.jdbc.driver.OracleDriver.class present in classes12.jar.

[Ankit Tripathi]

Hi Harshada,
I think you are beginning with JDBC.right?
Go through the link Link.
You'll get more than enough for beginners....

[harshada patil]

previously i made connection of JDBC with ms access through "data source" (ODBC) and it worked.
now i want to use table created in oracle 9i, what are the steps for doing it..?

[harshada patil]

Exception in thread "main" java.sql.SQLException: The Network Adapter could not establish the connection
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:199)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:480)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:413)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:508)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:510)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at Main.main(Main.java:24)
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:328)
at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:421)
at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:630)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:206)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:966)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292)
... 7 more
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:519)
at java.net.Socket.connect(Socket.java:469)
at java.net.Socket.<init>(Socket.java:366)
at java.net.Socket.<init>(Socket.java:180)
at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:127)
at oracle.net.nt.ConnOption.connect(ConnOption.java:126)
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:306)
... 12 more


please help me with this.. i'm doing program in Netbeans

[sudheer yathagiri kumar]

HI fRIEND,

found classes12.jar file in the ora_home and copy the file in the classpath of environment variables of system and paste it as a new class path and execute the program ...

in netbeans :

go to your project area-->libraries-->add jar file click and browse the classes12.jar

[harshada patil]

i added classes.jar file lib of my project but still getting the same error..

[Ankit Tripathi]

Hi Harshada,

Most possibly error is in Connection URL.

1.Check out if Connection URL is in format-
Connection conn = DriverManager.getConnection("jdbc:oracle:type of driver:@computer where your oracle client lies:Port No:Service Name","User Name", "Password");

Most possibly values should be-

type of driver-thin

computer where your oracle database instance lies-localhost or 127.0.0.1

Port No-1521

Service Name-XE

User Name & Password-your user name and password for oracle database instance.

Check out if Port No and Service Name are same as defined in $ORACLE_HOME/network/admin/tnsnames.ora(network connection configuration file) for oracle client.



2.The TNSListener has not been started.Start it with command-

C:\>lsnrctl start

3.Also try to add "ojdbc14.jar" in place of classes12.jar in your classpath.

[Avi Abrami]

Harshada,
I suggest you visit this Web page.

Good Luck,
Avi.

[harshada patil]

Thanks all for Reply

problem was in 'Service Name' , i changed it and now its working