Problem with connection to multiple Databases

i'm trying to write a sql query that returns data from tables that reside in
different databases on different servers, STYX and MICA to be exact.
I log into STYX and write the following simple SQL statement (what is
returned is really irrelevant, i'm just trying to figure out the process
right now)
select a.reason_code, b.reason
from [email protected] a,
hedgessw.reason_code b
where a.reason_code = b.reason_code
hedgessw.reason_code is on STYX
the other table is on MICA
i get the following error code
ORA-02019: connection description for remote database not found
this seems to imply that i need to create a "connection description" for the
remote database before i can establish the link.
is this the case?
if so, how do i create this?
any help you can offer would be greatly appreciated!
thanks in advance
null

What error messages are you getting?
What happens when you try to display the page?
General comments
- JSPs shouldn't be connecting to databases. That should be done in the data access layer, not the view layer. Put the code in beans/java code.
- Why reinvent the wheel? There are a couple of excellent taglibs out there that already do DB connections. Check out the JSTL sql tags.

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Urgent: Problems with connecting to a database

I have problems with getting a connection to both Oracle and Access.
For Access I added the .jar files in my classpath.
For Oracle I don't know which files I should add to the classpath.
Here's the code:
To connect with Access:
public class AccessDatabase extends JFrame {
     private Connection conn;
     private Statement stmt;
     public AccessDatabase() throws SQLException,IOException{
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conn= DriverManager.getConnection ("jdbc:odbc:easysoft:db1");
     System.out.println("Connected");
          stmt=conn.createStatement();
     ResultSet r=stmt.executeQuery("select name,adress from Tabel1");
     while(r.next()){
          String a=r.getString("name");
          String b=r.getString("adress");
          System.out.println(a+""+b);
and for Oracle:
public class AccessDatabase extends JFrame {
private Connection conn;
private Statement stmt;
public AccessDatabase() throws SQLException,IOException{
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
System.out.println("Connecting...");
conn= DriverManager.getConnection ("jdbc:odbc:easysoft:db1");
System.out.println("Connected");
stmt=conn.createStatement();
ResultSet r=stmt.executeQuery("select name,adress from Tabel1");
while(r.next()){
          String a=r.getString("name");
          String b=r.getString("adress");
          System.out.println(a+""+b);
     }}}

For getting connection from oracle you need to do 2 things.
1-- As said earlier put classes12.zip in classpath
2. For getting connection use as below ---
instead of --conn= DriverManager.getConnection ("jdbc:odbc:easysoft:db1");
Use thin driver ---
conn = DriverManager.getConnection (jdbc:oracle:thin:@servername:portno , UserName,Password);
replace servername UserName,Password in code you will get the connection.
Thanks
Rakesh

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Helllo
i've just started learning struts for my new project where i'm having problem in accessing mysql database
the datasource being defined in struts-config.xml is as follows:
<data-sources >
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      <set-property property="user" value="root" />
      <set-property property="password" value="" />
      <set-property property="minCount" value="" />
      <set-property property="maxCount" value="" />
      <set-property property="description" value="A" />
      <set-property property="url" value="jdbc:mysql:///dnbotind_nbotdb" />
      <set-property property="readOnly" value="false" />
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      <set-property property="loginTimeout" value="" />
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</data-sources>as i run the application
it gives the errors HTTP status 404-Servlet action is not available
Thx in advance

student-java wrote:
it gives the errors HTTP status 404-Servlet action is not availableThis is unrelated to the datasource configuration.
HTTP 404 is a "Page not found" error. The request URL is simply wrong. Either there's a typo in the URL, or there is a typo in the servlet mapping, or the servlet is not there where you think.

Problem with online split backup, database oracle

Hello,
we use for backup our SAP system online split backup, our database is almost 3TB big. Backup is functional but sometimes (4x-5x per month) backup fail with error bellow. If i understant this problem correctly brbackup lost connection to oracle after split disk system and cant stop backup mode in database and backup failed. How can i solve this problem? Exist some parameter for brbackup for reconnect to db when brbackup lost connection? Thanks for your help!
BR0051I BRBACKUP 7.00 (25)
BR0262I Enter database user name[/password]:
BR0055I Start of database backup: bebnhrzd.anf 2009-09-22 14.52.25
BR0484I BRBACKUP log file: /oracle/BP1/sapbackup/bebnhrzd.anf
BR0351I Restoring /oracle/BP1/sapbackup/cntrlBP1.dbf
BR0355I from /oracle/BP1/sapbackup/cntrlBP1.dbf ...
BR0280I BRBACKUP time stamp: 2009-09-22 14.53.10
BR0319I Control file copy created: /oracle/BP1/sapbackup/cntrlBP1.dbf 21676032
BR0280I BRBACKUP time stamp: 2009-09-22 14.53.13
BR0315I 'Alter database begin backup' successful
BR0280I BRBACKUP time stamp: 2009-09-22 14.53.14
BR0295I Splitting mirror disks...
BR0280I BRBACKUP time stamp: 2009-09-22 16.07.43
BR0296I Split of mirror disks successful
BR0280I BRBACKUP time stamp: 2009-09-22 16.17.44
BR0301E SQL error -3135 at location BrBackAlter-3, SQL statement:
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ORA-03135: connection lost contact
BR0280I BRBACKUP time stamp: 2009-09-22 16.17.44
BR0318E 'Alter database end backup' failed
BR0280I BRBACKUP time stamp: 2009-09-22 16.17.44
BR0301E SQL error -3114 at location BrBackAlter-3, SQL statement:
'/* BRBACKUP */ ALTER DATABASE END BACKUP'
ORA-03114: not connected to ORACLE
BR0280I BRBACKUP time stamp: 2009-09-22 16.17.44
BR0318E 'Alter database end backup' failed
BR0280I BRBACKUP time stamp: 2009-09-22 16.17.44
BR0301W SQL error -3114 at location BrbDbLogClose-1, SQL statement:
'UPDATE SAP_SDBAH SET RC = '0005', ENDE = '20090922161744', OBJ = ' ', LINE = '# 224     0     0     81358       7817759352        0                0 ALL          online_split    util_file        -
7.00 (25)' WHERE BEG = '20090922145225' AND FUNCT = 'anf' AND SYSID = 'BP1''
ORA-03114: not connected to ORACLE
BR0326W Update of database log header failed
BR0056I End of database backup: bebnhrzd.anf 2009-09-22 16.17.44
BR0280I BRBACKUP time stamp: 2009-09-22 16.17.44
BR0054I BRBACKUP terminated with errors
Backup utility finished with returncode 5
Backup FAILED

Hello,
in note 534729 is nothing about ORA-03135: connection lost contact only error ORA-03114 which refer to the note 335199 and in this note in nothing about ORA-03114 I want to say two things: this two oracle errors (ORA-03135 and ORA-03114) are not in alertSID.log on db server or in syslog on backup server. This error are only reported from brbackup which is running on backup server which is "client side". We don't have problem with connection from work processes on all instances to db server, we have only problem with brbackup which lost connection after split disk system. How i say this problem occurs only sometimes. I was tested network connection from backup server to db server via niping a this is result:
(root@hytti) #./niping -c -H kiuru -B 30000
Sat Sep 26 14:10:58 2009
connect to server o.k.
send and receive 10 messages (len 30000)
times -
avg      7305 usecs
max     46234 usecs
min      2168 usecs
bw    8020.50 kb/sec
excluding max and min:
av2      3081 usecs
bw2 19013.91 kb/sec
do you have any idea?? Thanks!

Application that connects to multiple databases.

I am developing an application that performs many task, but one in particular is connecting to multiple databases and creating user accounts in each all with the push of a single button. I have tried putting connect statements in the trigger code but I don't get the desired results.
How would I get my application to switch database connections while in execution?
Please reply to the forum, or email me @ [email protected]
Thank you.
Travis

Hi
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Hi everybody..
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Hi how could i use Dreamweaver CS3 to connect to multiple
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Maneet Puri wrote:
> Hi,
>
> I have used a lot the extensions of Dreamweaver for
implementing various
> dynamic features with connectivity to MySQL databases,
and I don't think there
> is any extension which allows connecting to the multiple
MySQL database. To do
> this you will have to make changes to scripts, at one
point of time from one
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> what you can do is switch between the users and database
of mysql. PHP offers a
> function mysql_change_user() to switch users and connect
to various different
> MySQL database.
What is stopping you from having more than one database
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Dooza
Posting Guidelines
http://www.adobe.com/support/forums/guidelines.html
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hello all!
i created a db in
jdbc:derby://localhost:1527/simple [demo on DEMO] ---->Demo
my user name demo and the pass demo
in the info of the db i get this:
display name:
jdbc:derby://localhost:1527/simple [demo on DEMO]
the problem lines is
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
and
Connection con = DriverManager.getConnection("jdbc:derby://localhost:1527/simple", "APP", "demo");
i tried to change the APP to demo but the same.
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java.lang.ClassNotFoundException: org.apache.derby.jdbc.EmbeddedDriver
java.sql.SQLException: No suitable driver found for jdbc:derby://localhost:1527/simple
the img of the work is here:http://yfrog.com/0cimpatg
thanks for all!

user12163960 wrote:
thanks the first line ok! THE LINE IS WORKING NOW:
Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
now i have problem with:
Connection con = DriverManager.getConnection("jdbc:derby://localhost:1527/simple", "APP", "demo");
the error:
java.sql.SQLException: No suitable driver found for jdbc:derby://localhost:1527/simple
You should really read the Derby manual.
When you use a url with jdbc:derby://localhost: then you must start a Derby server first.
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thanks
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