SQLException occurs in getConnection to the Second Database

Question

Hello all!
I have posted this earlier and apparently no one is able to reply. I need some answers regarding this matter. We are currently doing a project in one of our clients.
Right now, our team has created second database in our server, we now have two databases, one is in port 1521 and the new one is in port 1526. We need to access our 2nd database named SWITCHDB. Unfortunately, we are encountering the following error in our test program:
java.sql.SQLException: No more data to read from socket
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.sql.SQLException.<init>(SQLException.java:43)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java)
at oracle.jdbc.dbaccess.DBError.check_error(DBError.java)
at oracle.jdbc.ttc7.MAREngine.unmarshalUB1(Compiled Code)
at oracle.jdbc.ttc7.MAREngine.unmarshalSB1(MAREngine.java)
at oracle.jdbc.ttc7.TTIpro.receive(TTIpro.java)
at oracle.jdbc.ttc7.v8TTIpro.receive(v8TTIpro.java)
at oracle.jdbc.ttc7.TTC7Protocol.connect(TTC7Protocol.java)
at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java)
at java.sql.DriverManager.getConnection(Compiled Code)
at java.sql.DriverManager.getConnection(DriverManager.java:137)
at com.weserv.ibo.reports.TestSwitch.setConnection(TestSmsDb.java:40)
at com.weserv.ibo.reports.TestSwitchDb.main(TestSmsDb.java:122)
The error occurs in the following lines:
Connection connection = DriverManager.getConnection(DATABASE, USERNAME, PASSWORD);
where:
DATABASE = jdbc:oracle:thin:@Victoria:1526:SWITCHDB
USERNAME = switch
PASSWORD = switch
DRIVER = oracle.jdbc.driver.OracleDriver
We searched through this forum as well and we followed the advice to get the latest classes111.zip and put it in our classpath. Unfortunately, the error remains the same. Even if we changed our classes111.zip to classes12.zip, still the error is the same. =(
We are using Oracle 8i and Sun Solaris. We don't have any idea right now on how to go through this scenario. We could still connect to the first database and have the usual transactions without encountering any errors, but not when we connect in the second database. How is that? Are we missing some things?
Please feel free to reply. I would really appreciate it to state your views and advices.
Thanks you so much.
Regards,
Ronron

Answer 1

I make multiple database connections all the time with this code, perhaps you can try it. If it still does'nt work then perhaps your second database is not configured properly. In that case, compare the two databases for differences:
try
Connection conn = null;
String host= "serverip:1526"; //server ip address : portnumber
String sid = "SWITCHDB"; //use the db's SID
String user = "Victoria";
String pwd = "VicsPassword";
//Register driver, make sure you have installed correct drivers.
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
//Get thin connection
String thin = "jdbc:oracle:thin:@" + host + ":" + sid;
conn = DriverManager.getConnection(thin,user,pwd);
catch(SQLException se)
se.printStackTrace();