How can I connect to Oracle database from Iplanet webserver running on a Linux box and a database running on a Solaris box?

Question

Hi - I'm new to this group and wonders whether you guys can help me.
I'm trying to connect to my Oracle9i database via a Java servlet but
got the following error message in the web browser:
Internal error: exception thrown from the servlet service function
(uri=/servlet/HelloWWW6): java.lang.NullPointerException, Stack:
java.lang.NullPointerException
at oracle.jdbc.oci8.OCIDBAccess.check_error(OCIDBAccess.java:1743)
at oracle.jdbc.oci8.OCIEnv.getEnvHandle(OCIEnv.java:69)
at oracle.jdbc.oci8.OCIDBAccess.logon(OCIDBAccess.java:452)
at oracle.jdbc.driver.OracleConnection.(OracleConnection.java:287)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance
(OracleDriver.java:442)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:321)
at java.sql.DriverManager.getConnection(DriverManager.java:512)
at java.sql.DriverManager.getConnection(DriverManager.java:172)
at HelloWWW6.doGet(HelloWWW6.java:40)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.iplanet.server.http.servlet.NSServletRunner.invokeServletService
(NSServletRunner.java:897)
at com.iplanet.server.http.servlet.NSServletRunner.Service
(NSServletRunner.java:464)
My class path is:
Java VM
classpath: /u01/iplanet/servers/plugins/servlets/examples/legacy/beans
.10/SDKBeans10.jar:/usr/local/javamail-1.2/mail.jar:/usr/local/jaf-
1.0.1/activation.jar:/u02/app/oracle/product/9i/lib:/u02/app/oracle/pr
oduct/9i/jdbc/lib:/u02/app/oracle/product/9i/jdbc/lib/classes12.zip:/u
02/app/oracle/product/9i/jdbc/lib/nls_charset12.zip:/u01/iplanet/serve
rs/bin/https/jar/NSServletLayer.jar:/u01/iplanet/servers/bin/https/jar
/NSJavaUtil.jar:/u01/iplanet/servers/bin/https/jar/NSJavaMiscUtil.jar:
/u01/iplanet/servers/bin/https/jar/servlet.jar:/u01/iplanet/servers/bi
n/https/jar/servlet-2.3-filters-
api.jar:/u01/iplanet/servers/bin/https/jar/jsp092.jar:/u01/iplanet/ser
vers/bin/https/jar/jaxp.jar:/u01/iplanet/servers/bin/https/jar/crimson
.jar:/u01/iplanet/servers/bin/https/jar/xalan.jar:/u01/iplanet/servers
/bin/https/jar/jspengine.jar:
My LD_LIBRARY_PATH is:
/u02/app/oracle/product/9i/lib:/u02/app/oracle/product/9i/jdbc/lib:/u0
2/app/oracle/product/9i/jdbc/lib/classes12.zip:/u02/app/oracle/product
/9i/jdbc/lib/nls_charset12.zip
Can anyone help? This is currently driving me nuts. I was able to
connect when I changed it to an application.
I am using the Iplanet Webserver 6.0 on a Linux 7.2 platform. Like I
said, sqlplus works fine, standard java application works fine but
when I change it to a servlet (which means it now goes through the
webserver, I get this error message)
Does anyone know what the source code is trying to do at
OCIDBAccess.java:1743 ?
Thanks guys!

Answer 1

Tony, could you please explain me better the procedure that you wrote?
What are the boxes? My situation is similar:
| ServerSocket (1) |
| (192.168.1.100, 5555) |
|
|
|
|
| Proxy |
| Someone wants to connect to the ServerSocket (1) |
That is not true. You CAN do it but you need a box
outside the firewall with proper IP address to help
you. I am not sure if Sergio still wants the answer
today after more than a year from the original post (I
did not see the post until today when I try to search
for something else). Anyway, if such a box is
available (I call it 2nd box), you could first
establish a socket between the two boxes by HTTP
tunneling (I assume it is a http proxy). You have to
initiate the socket from the 1st box. Then start
another server socket on the 2nd box, forwarding the
traffic it gets from outside back to the 1st box using
the established channel. That is it.
Tony