Oracle Connectivity through struts JDK 1.6

Hello,
I am upgrading my existing application (JDK 1.4 and Tomcat 5.0) to a new environment (JDK 1.6 and Tomcat 5.5). The framework used is struts. I have downloaded the "ojdbc.jar" file in common/lib directory as well but when I am trying to get a connection from the data source (which is declared in the data-sources part of struts-config.xml file), the system hangs. No error is being thrown. The same application does work when i create a connection using normal JDBC(DriverManager & class.ForName). I have searched through various posts and the only suggestion i found is using "ojdbc.jar" file. Bot to no avail. please suggest what should I do.
thanks

you can.
See the changing your JVM section for Studio at the following pages for instructions on what to do http://download-llnw.oracle.com/docs/cd/E13154_01/bpm/docs65/installguide/index.html
Thanks,
Mike

Similar Messages

Non-Oracle connection through HS issue

Greetings!
I have created a HS to a MySQL server and from SQL> this works fine as a dblink
create database link "dvb_mysqllink"
connect to "sord_ro"
identified by "<pwd>"
using 'mysqlSORDdev_cmdb';
SQL> select 'foo' from dual@dvb_mysqllink;
'FOO'
foo
What do I do to use this HS from OWB?
1) In "Design Center" I select Databases->Non-Oracle->ODBC->"new" (via right click)
2) I name the Module "MYSQL_HS"
3) I edit (and rename) the resulting Location to MYSQL_HS_LOCATION and use:
4) Type: HOST:PORT:SERVICE
5) USER NAME: (username on Mysql same as dblink above)
6) Password: (password on Mysql same as dblink above)
7) Host (the database that holds the HS listener, same server the dblink is created in)
8) Port 1521
9) Service Name: "mysqlSORDdev_cmdb" (the same DNS/TNSLISTENER value used in the dblink)
when I hit test connection I get:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Generic Connectivity Using ODBC][MySQL][ODBC 3.51 Driver]Access denied for user 'SORD_RO'@'DSS0W023' (using password: YES) (SQL State: S1000; SQL Code: 1045)
ORA-02063: preceding 2 lines from OWB_961
I know the user/name password are correct as they're the same I use when creating the dblink via SQL....
Should I not use ODBC? Did I bump my head somewhere?
Any help here would be great.
Thanks in advance,
Dave-

You have to do the following steps:
1) In "Design Center", select Databases->Non-Oracle->ODBC->"new" (via right click)
2) Name the Module
3) Type Database Link
4) From Location: select the location of the database you have configured the databse link.
5) Database Link: if all is correct, you can select here the "dvb_mysqllink" databse link.
6) Test the connection.
I did those steps and it works, but i have a problem. When i want to import some tables, i can see the tables in the import wizard, but it don't import anything. The wizard is closed with no messages. Help, please!!

Re: Track Oracle users in Oracle connecting through Tuxedo

Check the dba system tables and views (specially the dynamic v$ ones). You will find
usefull session information (user, from where, program name, blocking conditions...).
As a help, you can use the oracle dba scripts or use a graphical tool to show you
a report using this tables/views.
R.G.
Ravi wrote:
I am an Oracle DBA currently maintaining Oracle 8.0.6 database on UNIX. We have Tuxedo
as our middleware, but unfortunately I don't have access to this server. How as a
DBA can I determine who is logging into my database, user session info, etc while
connected to Oracle.
Thanks,
Ravi

V$session and v$process in this case wouldn't be helpful because the username will be showing the same database account for all the tuxedo users and osuser always shows the same os user account.
Could somebody tell me how to distinguish and identify what the tuxedo user is?
Thanks!
Ravi.

Problem in connecting to oracle DB through NWDS

Hi All,
I cannot establish a connection to the oracle DB through the below mentioned code written in webdynpro java. I am new to this area.
Please check what is wrong with this code and suggest me how to resolve this......I have pasted the classes12.jar in the lib folder.
import oracle.jdbc.driver.OracleDriver;
ResultSet resSet = null;
Statement Stat = null;
Connection conn = null;
PreparedStatement pstmt= null;
String url = "jdbc:oracle:thin:@local server:1521:SID";
String user = "ABC";
String password = "123";
try
         conn = DriverManager.getConnection(url,user,password);
         Stat = conn.createStatement();
         pstmt = conn.prepareStatement("Select * from tablename");
         resSet = pstmt.executeQuery();
          wdComponentAPI.getMessageManager().reportSuccess("Result"+resSet);
if (resSet != null)
resSet.close(); // close ResultSet
Stat.close(); // close Statement
conn.close();
catch (Exception e)
e.printStackTrace();
Regards,
Athulya.

Hi ,
import oracle.jdbc.driver.OracleDriver;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
ResultSet resSet = null;
Statement Stat = null;
Connection conn = null;
PreparedStatement pstmt= null;
String url = "jdbc:oracle:thin:@local server:1521:SID";
String user = "ABC";
String password = "123";
try
conn = DriverManager.getConnection(url,user,password);
Stat = conn.createStatement();
pstmt = conn.prepareStatement("Select * from tablename");
resSet = pstmt.executeQuery();
wdComponentAPI.getMessageManager().reportSuccess("Result"+resSet);
if (resSet != null)
resSet.close(); // close ResultSet
Stat.close(); // close Statement
conn.close();
catch (Exception e)
e.printStackTrace();
Regards,
Athulya

How to connect Oracle database through Microsoft ODBC?

My ODBC Configuration:
DSN name is :db
Username : india
Server :db.world
Now, i am trying to connect with oracle database through SQL*plus or TOAD.
But, it is giving the following error.
ORA-03121: no interface driver connected - function not performed
Database version : 9.2.0.1.0
Operating System : Microsoft Windows XP
ODBC Version : 2.575.1117.00
I am trying to connect with the database like this:
Username : india
Password : india
Database : ODBC:db
Can i connect like this otherwise whether i need install any other supporting driver?

Now, i am trying to connect with oracle database
through SQL*plus or TOAD.
But, it is giving the following error.
ORA-03121: no interface driver connected -
function not performed
I am trying to connect with the database like this:
Username : india
Password : india
Database : ODBC:db
As already stated, you can not use the DSN in SQL*Plus (nor TOAD, afaik)!
I can reproduce the error message with the following:
C:\>sqlplus a/b@ODBC:c
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Aug 4 21:34:58 2008
Copyright (c) 1982, 2007, Oracle. All rights reserved.
ERROR:
ORA-03121: no interface driver connected - function not performedLooking up the message, it says:
Cause: A SQL*Net version 1 prefix was erroneously used in the connect string
Looks like this has nothing to do with your DSN - it is more a matter of not using a proper connection string.
If 'Test Connection' works then you should probably proceed to work with Crystal Reports, using the DSN in question.
However, you should note that the old MS ODBC driver for Oracle was designed for OCI 7 (and for databases 7.x-8.x) and is now considered obsolete by both MS and Oracle.
Deprecated MDAC components and MS KB Article 244661.
Use the Oracle ODBC driver included with a supported Client version instead.
Edit:
Clarifying and adding references.
Message was edited by:
orafad

How to connect oracle data through BlazeDS in flex 4

How to connect oracle data through BlazeDS in flex 4

Hi
               If u want to connect to the database oracle just paste the Ojdbc14.jar file into the lib folder of blazeds project..
                         Normally blazeds distribution version contains blazeds.war file... upload that war file to the tomcat or any other application server..
                      u will get the build path and in lib folder paste the ojdbc14.jar file to connect to the oracle and do u r stuff at server side java ....
                  if this will reslove ur problem please mark as answered..

Database connectivity in struts ( EJB) with Oracle 9

hi,
We are developing a Banking application using Struts & EJB, & I need to use Oracle 9 as a database. Could anyone please let me know, the professional way of connecting this application to the oracle database using Struts and EJB. A good example will help me a lot, so please give me example code also.
Thanks a lot in advance.
Raghav

Hello,
For keeping the standby database on same HOST....it does seems to be great...i must be on separate box....may be on different network...i believe you would be using it for some failiover purpose...Isn't it.
For Unix it is quite easy..you may implement like this...The Issue which you are referring may be because of wrong Oracle Home or SID....(i'm not very much sure..) You may try following steps:
1. Create a separate Unix A/c and set ORACLE_HOME and ORACLE_SID relevant to your StandBy Database. I believe the Home would be same whereas SID would be your standby databse.
2. Take a Cold Backup of All your database files from Production.
3. Copy these files on separate mount points for standby Db. Put them all to relevant directory and be sure to set the Group of all these files as "SYSDBA" This is Must.
4. And then modify your INIT.ORA file i.e. InitSID.ora file accordingly and put the file in ORACLE_HOME
5. Login to Newly created Unix A/c. Check whether ORACLE_SID is set ot not to your standby database instance.
6. Login to sys as sysdba and start up the database. It will by default would try to check & do for your relevant Oracle SID for this profile...
HTH
Regards,
Kamesh Rastogi

Visual Studio 2010 64bit cann't connect Oracle database through 64bit ODBC Driver

Hi,
I am developing an 64bit And-In software. My OS is windows7 64bit Ultimate. Developer tool is
Microsoft Visual Studio 2010 Ultimate 64bit any-CUP.
Server is SUN server and Oracle database 10.2.0.5 64bit enterprise edition.
I have installed instantclient-odbc-win64-10.2.0.5 on my computer.
I am able to connect through the command line sqlplus user/pass@server.
In date source(c:\windows\system32\odbcad32.exe), ODBC Driver connection successful.
But in VS2010 C#, use Tools -> Connect Database,I get an error 193 (Oracle in
instantclient10_2,c:\ora10_64\SQORA32.dll) cann't be loaded.
SQORA32.dll is 32bit ODBC Driver or 64bit ODBC Driver?
How can I connect database with vs2010 64bit?
Regards

There is no Visual Studio 2010 Ultimate 64bit as far as I know. It's a 32 bit app. Generally you'd need to install a 32 bit client to use the 32 bit tools.
Hope it helps,
Greg

Unable to connect to Oracle 8i through a java program

Hi all,
I have Oracle 8i standard edition. Does this allow remote clients such as a java program trying to connect through a JDBC program?

Yes, you should be able to connect to the Oracle database as long as you have your listener listening on a particular port, your JDBC URL has all the necessary info and you are using Oracle's JDBC driver.

How to Use the Oracle Security (dynamic connection) ADF Struts ?

Hello All
I need to use the security from Oracle in my application, I mean I use a connection to my DB , but This connection would have to be dynamic, I have to create different users with grants to my tables , and The users would have to connect to my application directly , I read something in the forum , but I'm not sure if it's possible , because I have appmodule created and they are connected to a same user. I need this be dynamic Could I use do This?. Someone have the same requirement?. Someone can help me , pleaser, Urgent!!
Thanks all.
Regards.

Hello
We were banging our heads on a similar thing, maybe this will help
We needed to convert the wrapped connection to an OracleConnection so that we could do a proxy switch, but maybe you could apply it to your situation anyway
1-you have to convert the Connection object to an OracleConnection in order to use the method that does the proxy switch
The method to do this is getInnermostDelegate()
Once you call this method, you get a new Connection object that can be cast to an OracleConnection object
See below for the snippet of code
// now switch the user and reselect
if (conn instanceof DelegatingConnection) {
properties.put("PROXY_USER_NAME","peter/peter");
oraConn =((DelegatingConnection)conn).getInnermostDelegate();
if (oraConn == null)
out.println("oraConn is null\n");
((OracleConnection)oraConn).openProxySession(OracleConnection.PROXYTYPE_USER_NAME,properties);
2-you have to put a setting in the xml file in conf/Catalina/localhost that allows you to call the getInnermostDelegate() method
By default, Tomcat does not allow you to call this method, it will always return null
You have to change the xml to allow it to return an object
It seems that WebSphere and Tomcat both frown on vendor-specific methods that do not comply with the JDBC standards, but do allow it
Here is the setting:
<parameter>

<name>accessToUnderlyingConnectionAllowed</name>
<value>true</value>
</parameter>
Note, this setting was also put in the conf/server.xml file
Thanks
Peter

Connecting Oracle DataBase through WebDynpro

Hi,
I created a Dynamic table, now I should display the data from Oracle Database. I tried in many various ways to connect to database, but the data is not retrieving.
Can u explain the reasons and give necessary coding to retrieve the data.
Its very very urgent.

Hi
I think you can do using the APIs provided by SAP.
Check this link
JDBC Reference
or
Try connectinc using lookup.
try{
InitialContext ctx=new InitialContext();
javax.sql.DataSource ds=(javax.sql.DataSource)ctx.lookup("jdbc/SAPJ2EDB");
java.sql.Connection con=ds.getConnection();
java.sql.Statement stmt=con.createStatement();
con.close();
catch(Exception e)
wdComponentAPI.getMessageManager().reportException("Exception "+e,true);
Check this thread moreuseful.
WebDynpro and Oracle Connection
Please Check these threads
Re: I need a j2ee code for getting data from oracle database
Re: oracle connection
Re: problem with displaying records from the database in a table ui element
See this sample application and help
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/library/uuid/f0b0e990-0201-0010-cc96-d7ecd2e51715
I hope these links will help u resolve your problem.
All The Best
Priyanka
Do Reward Points

Random SP2 error when starting oracle process through SHELL script

Hi All,
I am trying to process data in n-Number of tables through a package. The package is called through a shell script to create start data processing. All calls to the package are in a sql script which is basically exec calls-
exec package.process ('T1','some param');
exec package.process ('T1','some param');
exec package.process ('T..n','some param');
I have a shell script which I use to execute commands from the sql script. There is a reason behind using shell script. For some strange reason, I keep on getting -
ERROR: logon denied - check for valid user with valid privileges
SP2-0640: Not connected
SP2-0641: "EXECUTE" requires connection to server
SP2-0640: Not connected
for some EXEC calls. Problem is, errors are generated at random. So in one run, I get error for T10,T11 and then in next run I might get for some other tables.
However, when I am running the sql script from the sql prompt, all calls to the package are executed without any problem.
This makes me think, it is something to do with the way database connection being initiated through UNIX.
Has anyone faced similar issue? Your help/gudence is much appreciated.
DB: Oracle 10.2.0.5
OS: SUN Solaris 10
Thanks in advance.

Login credentials are provided inside the shell script.
I did put a sleep(10) after EOF but no help. As mentioned if I run script file from sql promt, it runs without any hiccup. So it is the connection through the UNIX that is causing issue.
As pointed out by Sybrand, I agree that it does not make a sense to connect and commit after every sql statement. So decided to change the shell script and so far, the result from my initial tests on a sample data is quite encouraging. Hopefully I will have a solution.
But it will be nice to know why SHELL is doing what it is doing!!
Legacy prog are sometime big time eye-openers..;)

TNSPING failure and but surprising connecting through SQL*PLUS

I have Oracle 9i and Oracle 10g express edition installed on my local machine.But since in the path i specified path of Oracle10g first so always tnsnames.ora got picked up from Oracl10g directory which is
C:\softwares\oraclexe\app\oracle\product\10.2.0\server\network\admin\sqlnet.ora
Following are the contents of my sqlnet.ora :--->
SQLNET.AUTHENTICATION_SERVICES = (NTS)
Following are the contents of my tnsnames.ora:-->
CCTD91 =(DESCRIPTION =
(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = cctdev91.jankoc.com)(PORT = 1521)))(CONNECT_DATA =(SERVICE_NAME = CCTD91)))
Now when i am doing tnsping to this i got the error as:
C:\>tnsping cctd91
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 23-APR-2011 16:08:52
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
C:\softwares\oraclexe\app\oracle\product\10.2.0\server\network\admin\sqlnet.ora
TNS-03505: Failed to resolve name
But when i connect through Oracle 9i client(SQL*Plus) like peter/devworks@CCTD91, then i am able to connect successfully to Oracle 11g.
Could someone let me know why TNSPING is failing for this and then still why i am able to connect thru SQL*PLUS using the name defined in TNSNAMES.ORA. ?

sqlnet.ora is having just one line:
SQLNET.AUTHENTICATION_SERVICES = (NTS)
I tried by adding another line: NAMES.DIRECTORY_PATH=(TNSNAMES) but did not make any difference so i removed.
C:\>lsnrctl service
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 24-APR-2011 19:06:36
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "XEXDB" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1002 state:ready
DISPATCHER <machine: localhost, pid: 3288>
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.XXX.XXX.COM)(PORT=1041))
Service "XE_XPT" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
Service "xe" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
The command completed successfully
C:\>lsnrctl status
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 24-APR-2011 19:08:48
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production
Start Date 23-APR-2011 16:05:49
Uptime 1 days 3 hr. 2 min. 59 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File C:\softwares\oraclexe\app\oracle\product\10.2.0\server\network\admin\listener.ora
Listener Log File C:\softwares\oraclexe\app\oracle\product\10.2.0\server\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC_FOR_XEipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost.xxx.xxx.COM)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=8080))(Presentation=HTTP)(Session=RAW))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "XEXDB" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Service "XE_XPT" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Service "xe" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
The command completed successfully
C:\>
Oracle 11g is installed remotely on our office LAN.
Please note that i just removed company name with XXX from the above lsnrcts commands output, just for security reasons.

Certificates in lieu of Oracle connection Manager for our Applets -- Help!!

I support an application named IDEA out of New York. The IDEA application is an INTRANET application for use within our company Firewall.
Currently, the IDEA application's front end resides on a Windows 2000 Server running IIS 5 and JRun 3.0. The back-end runs on Oracle 8.1.7 database on a UNIX Database Hosting Utility (DHU). Our applets communicate with the back-end database using Oracle Connection Manager that is installed on the Web Host.
We are trying to migrate to the DWeb environment (Linux cluster). The linux cluster is running Apache Tomcat. We have been told that installing Oracle connection manager is not a viable solution (our company does not support it). Because of this our applets cannot communicate with our database. Below is a brief description of this limitation and also the work-around.
====================================================================================================================================================
Connecting to the Database through the Applet
The most common task of an applet using the JDBC driver is to connect to and query a database. Because of applet security restrictions, unless particular steps are taken an applet can open TCP/IP sockets only to the host from which it was downloaded (this is the host on which the Web server is running). This means that without these steps, your applet can connect only to a database that is running on the same host as the Web server.
If your database and Web server are running on the same host, then there is no issue and no special steps are required. You can connect to the database as you would from an application.
As with connecting from an application, there are two ways in which you can specify the connection information to the driver. You can provide it in the form of host:port:sid or in the form of a TNS keyword-value syntax.
For example, if the database to which you want to connect resides on host prodHost, at port 1521, and SID ORCL, and you want to connect with user name scott with password tiger, then use either of the two following connect strings:
using host:port:sid syntax:
String connString="jdbc:oracle:thin:@prodHost:1521:ORCL";
conn = DriverManager.getConnection(connString, "scott", "tiger");
using TNS keyword-value syntax:
String connString = "jdbc:oracle:thin:@(description=(address_list=
(address=(protocol=tcp)(port=1521)(host=prodHost)))
(connect_data=(sid=ORCL)))";
conn = DriverManager.getConnection(connString, "scott", "tiger");
If you use the TNS keyword-value pair to specify the connection information to the JDBC Thin driver, then you must declare the protocol as TCP.
However, a Web server and an Oracle database server both require many resources; you seldom find both servers running on the same machine. Usually, your applet connects to a database on a host other than the one on which the Web server runs. There are two possible ways in which you can work around the security restriction:
You can connect to the database by using the Oracle8 Connection Manager.
or:
You can use a signed applet to connect to the database directly.
These options are discussed in the next section, "Connecting to a Database on a Different Host Than the Web Server".
Connecting to a Database on a Different Host Than the Web Server
If you are connecting to a database on a host other than the one on which the Web server is running, then you must overcome applet security restrictions. You can do this by using either the Oracle8 Connection Manager or signed applets. ====================================================================================================================================================
It was suggested that we implement signed applets (it is our only alternative at this time). This is where, hopefully, you can help me. We are unfamiliar with using certificates and signing applets. We need to obtain certificates that will allow our applets to connect to our oracle database on the DHU. What kind of certificates do we use? Are their coding examples of how to use these certificates? We have a CA within our company but they cannot tell us what kind of certificates we need. How many certificates do we need? Do we install any certificates on the backend database server? Any information would be greatly appreciated. We are basically trying to get our applet to work outside the sandbox by establishing a connection to the database server.Thanks in advance for your time.

or:
You can use a signed applet to connect to the database directly.
These options are discussed in the next section, "Connecting to a Database on a Different Host Than the Web Server".
If you want to connect to the database from the applet there is a third option.
Since this is an intranet application you have control over the desktops using this
application. In our company the jre ignores signed applets (as it should) because
it gives control to the user to run potentially harmfull applets from the Internet.
The way to dish out special privileges to applets is the policy, put a policy file on
you intranet and have the jre use it by specifying its URL in the java.security.
Here is some more info about security configuration of the jre:
http://forum.java.sun.com/thread.jspa?threadID=646161&tstart=45
reply 3
We use Oracle jinitiator to run Oracle forms but I am not involved in that project
and do not know a lot about it. It does perform quite good though.

Certificates in lieu of Oracle connection Manager for our Applets

I support an application named IDEA out of New York. The IDEA application is an INTRANET application for use within our company Firewall.
Currently, the IDEA application's front end resides on a Windows 2000 Server running IIS 5 and JRun 3.0. The back-end runs on Oracle 8.1.7 database on a UNIX Database Hosting Utility (DHU). Our applets communicate with the back-end database using Oracle Connection Manager that is installed on the Web Host.
We are trying to migrate to the DWeb environment (Linux cluster). The linux cluster is running Apache Tomcat. We have been told that installing Oracle connection manager is not a viable solution (our company does not support it). Because of this our applets cannot communicate with our database. Below is a brief description of this limitation and also the work-around.
====================================================================================================================================================
[i][i][i]Connecting to the Database through the Applet
The most common task of an applet using the JDBC driver is to connect to and query a database. Because of applet security restrictions, unless particular steps are taken an applet can open TCP/IP sockets only to the host from which it was downloaded (this is the host on which the Web server is running). This means that without these steps, your applet can connect only to a database that is running on the same host as the Web server.
If your database and Web server are running on the same host, then there is no issue and no special steps are required. You can connect to the database as you would from an application.
As with connecting from an application, there are two ways in which you can specify the connection information to the driver. You can provide it in the form of host:port:sid or in the form of a TNS keyword-value syntax.
For example, if the database to which you want to connect resides on host prodHost, at port 1521, and SID ORCL, and you want to connect with user name scott with password tiger, then use either of the two following connect strings:
using host:port:sid syntax:
String connString="jdbc:oracle:thin:@prodHost:1521:ORCL";
conn = DriverManager.getConnection(connString, "scott", "tiger");
using TNS keyword-value syntax:
String connString = "jdbc:oracle:thin:@(description=(address_list=
(address=(protocol=tcp)(port=1521)(host=prodHost)))
(connect_data=(sid=ORCL)))";
conn = DriverManager.getConnection(connString, "scott", "tiger");
If you use the TNS keyword-value pair to specify the connection information to the JDBC Thin driver, then you must declare the protocol as TCP.
However, a Web server and an Oracle database server both require many resources; you seldom find both servers running on the same machine. Usually, your applet connects to a database on a host other than the one on which the Web server runs. There are two possible ways in which you can work around the security restriction:
You can connect to the database by using the Oracle8 Connection Manager.
or:
You can use a signed applet to connect to the database directly.
These options are discussed in the next section, "Connecting to a Database on a Different Host Than the Web Server".
Connecting to a Database on a Different Host Than the Web Server
If you are connecting to a database on a host other than the one on which the Web server is running, then you must overcome applet security restrictions. You can do this by using either the Oracle8 Connection Manager or signed applets. ====================================================================================================================================================
It was suggested that we implement signed applets (it is our only alternative at this time). This is where, hopefully, you can help me. We are unfamiliar with using certificates and signing applets. We need to obtain certificates that will allow our applets to connect to our oracle database on the DHU. What kind of certificates do we use? Are their coding examples of how to use these certificates? We have a CA within our company but they cannot tell us what kind of certificates we need. How many certificates do we need? Do we install any certificates on the backend database server? Any information would be greatly appreciated. We are basically trying to get our applet to work outside the sandbox by establishing a connection to the database server.
Thanks in advance for your time.

Eston,
Have you searched SUN's java Web site? Maybe this article will help:
http://java.sun.com/developer/technicalArticles/Security/Signed/index.html
Good Luck,
Avi.

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