Name of the database connection

When I create a new datasource in JSC and then deploy my application, I find that the JSC creates a database connection called, in my case:
jdbc/decsis_RaveGenerated_1088606994
Why the RaveGenerated plus the number? I would just want it to be called jdbc/decsis. Can this be changed so it remains the same always without that extra characters? Thank you.
Franklin Angulo

No. That is not how it is working... An example: I took my .war application to another company, then installed an application server with a the following database connections:
Connection Pool: DecsaPool
Resource: jdbc/decsis
When I run my application, it gives me the error that it doesn't find the jdbc/decsis_RaveGenerated10906100xxxx. So I go to my Application Server and under Resources create a new one with the same name as it asks me in the error and make it refer to the DecsaPool Connection Pool. And then my application works fine.
I found that I could modify the sun-web.xml after my application builds to change that name to just jdbc/decsis. But when I clean my project that information would disappear and then when I build again I would have to modify the sun-web.xml again. So is there a way to modify this so it never gives me the RaveGenerated part at all? Thank you.
Franklin Angulo

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Why do I get a class conflict between the Prepare SQL.vi and the Get Column Name.vi with the SQL Toolkit compatibility vis from the Database Connectivity Toolkit?

I have done extensive programming with the SQL Toolkit with LabVIEW versions through 6.1. My customer now wants to upgrade to Windows 7, so I am trying to upgrade to LabVIEW 2009 (my latest purchased version) using the Database Connectivity Toolkit, and the SQL Toolkit Compatibility vis. Everything seemed to be going okay with the higher level SQL operations, but I ran into trouble with the Get Column Name.vi.
The pictures below show the problem. The original SQL Toolkit connected the Prepare SQL.vi with the Get Column Name.vi with a cluster of two references, one for connection, and one for sql. The new compatibility vis have a class conflict in the wire because the Prepare SQL.vi contains a cluster with connection, and command references, but the Get Column Name.vi expects a cluster with connection and recordset references.
How do I resolve this conflict?
Thank You.
Dan

I've never worked with the old version of the toolkit, so I don't know how it did things, but looking inside the SQL prep VI, it only generates a command, and the the column name VI wants a recordset. I'm not super familiar with all the internals of ADO, but my understanding is that is standard - you only have the columns after you execute the command and get the recordset back. What you can apparently do here is insert the Execute Prepared SQL VI in the middle and that will return what you need.
I'm not sure why it worked before. Maybe the execute was hidden inside the prep VI or maybe you can get the column names out of the command object before execution. In general, I would recommend considering switching to the newer VIs.
Try to take over the world!

Problem in getting the database connection from a connection pool

Hai All,
I am facing a problem in getting the database connection from a connection pool created on weblogic server 8.1.
I am using the Oracle database 8.1.7.
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import java.sql.*;
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.InitialContext;
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The problem is, after converting the application into WAR file it can be deployed
on any machine or different port on same machine. My application fails if its deployed on
weglogicserver which is at different port.
Is there any way that i can get rid of those ht.put statements or any other way to solve the problem.
any help is appreciated.
Thanks in advance
Pooja.

Hai All,
Firstly, thanks for ur reply.
Even i have seen some code which uses context constructor with out any parameter and works fine.
i dont understand why its not working for my code.
When i remove those ht.put code and use context constructor with out any parameter, it giving an error.
Context ctx = new InitialContext();
javax.sql.DataSource ds = (javax.sql.DataSource) ctx.lookup ("ocjndi");
connection = ds.getConnection();The error is as follows:
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
the above error is forcing me to include those code but if the port number is changed the code will not work. Plz let meknow if some setting have to be made.
I appreciate all ur valuable help.
Thanks once again.
Pooja.

I am using the database connectivity toolkit to retrieve data using a SQL query. The database has 1 million records, I am retrieving 4000 records from the database and the results are taking too long to get, is there any way of speeding it up?

I am using the "fetch all" vi to do this, but it is retrieving one record at a time, (if you examine the block diagram) How can i retrieve all records in a faster more efficient manner?

If this isn't faster than your previous method, then I think you found the wrong example. If you have the Database Connectivity Toolkit installed, then go to the LabVIEW Help menu and select "Find Examples". It defaults to searching for tasks, so open the "Communicating with External Applications" and "Databases" and open the Read All Data. The List Column names just gives the correct header to the resulting table and is a fast operation. That's not what you are supposed to be looking at ... it's the DBTools Select All Data subVI that is the important one. If you open it and look at its diagram, you'll see that it uses a completely different set of ADO methods and properties to retrieve all the data.

Closing the database connection after report in a server application

I searched these forums and the internet for a definitive answer on asking the Crystal SDK for java to close the jdbc connection after it has generated a report. We have been using the Crystal Report SDK to generate reports within our JEE application, built upon the Spring framework, for the past two years. It works well, especially if you prepare views in the database for your reports.
From what I can tell once you have used ReportClientDocument to create your report you all the close() method to release resources associated with report generation, but this does not close the jdbc database connection.
Further research states that if you are using the CrystalReportViewer you can call the dispose method to close the database connection. We are not using JSP nor this class, so that does us little good.
Finally I found a post that one could call ((AdvancedReportDocument)reportClientDocument.getReportSource()).dispose(). This doesn't drop the connection either.
Each report actually opens 3 connections according to SQL Server. Each report will reuse the connections it has open, so for 50 reports, theoretically, we could have up to 150 connections. We explained to our client those connections remain inactive, however this is unacceptable to our client as they would like to minimize the number of connections left open to their database.
If anyone can post any further information on this issue, it is much appreciated.

Yes, another team member found the issue. Quite embarrassing really I didn't see it. I was looking for the answer within Crystal's libraries. It had nothing to do with Crystal.
The developer who wrote the helper code for using Crystal first opened a connection to the datasource for the live production database and read that connection information for the report. Next he set that connection information in the report template's PropertyBag, then ran the report. The developer however forgot to close the connection he used to look up the connection info, leaving a memory leak and using up all the connections.
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Error while applying a patch "Unable to get the database connection"

Dear Experts,
A patch which got successfully applied is failing Production and the error is kind of surprising to me.
Apps version is 11.5.10.2
db version is 10.2.0.4
The worker log file shows
Time when worker restarted job: Thu Nov 24 2011 22:14:52
Start time for file is: Thu Nov 24 2011 22:14:52
adjava -ms128m -mx256m -nojit oracle.apps.fnd.odf2.FndXdfCmp &un_apps &pw_apps &un_apps &pw_apps &jdbc_protocol &jdbc_db_addr table &fullpath_pa_patch/115
Reading product information from file...
Reading language and territory information from file...
Reading language information from applUS.txt ...
Temporarily resetting CLASSPATH to:
"/erp/oracle/prodappl/ad/11.5.0/java/adjri.zip:/usr/java14/jre/lib/charsets.jar:/usr/java14/jre/lib/core.jar:/usr/java14/jre/lib/graphics.jar:/usr/java1
Calling /usr/java14/bin/java ...
Exception occured
              Copyright (c) 2003 Oracle Corporation
                 Redwood Shores, California, USA
         XDF(XML Object Description File) Comparison Utility
                        Version 1
NOTE: You may not use this utility for custom development
      unless you have written permission from Oracle Corporation.
Unable to get the database connection using schema username/passwordIo exception: The Network Adapter could not establish the connection
AD Run Java Command is complete.
                     Copyright (c) 2002 Oracle Corporation
                        Redwood Shores, California, USA
                                    AD Java
                                 Version 11.5.0
NOTE: You may not use this utility for custom development
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AD Worker error:
The above program failed. See the error messages listed
above, if any, or see the log and output files for the program.
Time when worker failed: Thu Nov 24 2011 22:14:53
{code}
The error says database connection error. I am able to connect to the database using sqlplus. I tried to restart the failed worker, but the same error is repeating.
Any help would be appreciated.
Thanks
qARS
Edited by: user7640966 on Nov 24, 2011 9:07 AM

Hussein,
One thing which I noticed now is in the apps Tier the
tnsnames.ora under $TNS_ADMIN
shows entry like this:
PROD=
        (DESCRIPTION=
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                (ADDRESS=(PROTOCOL=tcp)(HOST=<dbServer>)(PORT=1521))
            (CONNECT_DATA=
                (SID=PROD)
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I deleted the tnsnames.ora and reran autoconfig but it is again recreating the same entry.
Any clue how this can be fixed?
Thanks
qARS

When using the Database Connectivity Toolset, reads and writes with long binary fields are incompatible.

I am trying to write LabVIEW Variants to long binary fields in a .mdb file using the Database Connectivity Toolset. I get errors when trying to convert the field back to a variant after reading it back from the database.
I next tried flattening the variant before writing it and ultimately wound up doing the following experiments:
1) If I use DB Tools Insert Data to write an ordinary string and read it back using a DB Tools Select Data, the string is converted from ASCII to Unicode.
2) If I use DB Tools Create Parameterized Query to do an INSERT INTO or an UPDATE operation, specifying that the data is BINARY, then read it back using a DB Tools Select Data,
the length of the string is prepended to the string itself as a big-endian four-byte integer.
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Presuming that this same problem affects Variants when they are written to the database and read back, I could see why I get an error. At least with flattened strings I have the option of discarding the length bytes from the beginning of the string.
Am I missing something here?

David,
You've missed the point. When a data item is flattened to a string, the first four bytes of the string are expected to be the total length of the string in big-endian binary format. What is happening here is that preceding this four-byte length code is another copy of the same four bytes. If an ordinary string, "abcdefg" is used in place of the flattened data item, it will come back as <00><00><00><07>abcdefg. Here I've used to represent a byte in hexadecimal notation. This problem has nothing to do with flattening and unflattening data items. It has only to do with the data channel consisting of writing to and reading from the database.
I am attaching three files that you can use to demonstrate the problem. The VI file c
ontains an explanation of the problem and instructions for installing and operating the demonstration.
Ron Martin
Attachments:
TestLongBinaryFields.vi ‏132 KB
Sample.UDL ‏1 KB
Sample.mdb ‏120 KB

Using column value is it possible to find the table name in the database?

Hi all,
using column value is it possible to find the table name in the database?
guys i need the table value
Note:
oracle-9i
for example:
i don't know NIC(column value) in which table in the database.
Thank you,
with regards,
JP.
Edited by: Guest on Feb 27, 2012 5:42 AM

Hi,
As far as I understand what you are asking for I would suggest 4 data dictionaries that will help you to know the table name from the column names
1. USER_TAB_COLS
2. ALL_TAB_COLS
3. DBA_TAB_COLS
4. COLS
These can give you detail information about the columns and respective tables at user, schema, dba level. Further information on the table can be found by querying ALL_OBJECTS table giving table_name as Object_name, or you can join the data dictionaries too.
To know about various data dictionaries avalible in Oracle please query select * from cat;
Let us know if you need further assistance.
Twinkle

How to check my job name from the database...

I have written one job scheduler which is as follows :
SQL> ED
Wrote file afiedt.buf
1 DECLARE
2 X NUMBER;
3 JobNumber NUMBER;
4 BEGIN
5 SYS.DBMS_JOB.SUBMIT
6 (
7 job => X
8 ,what => 'scott.SPLITSMS;'
9 ,next_date => SYSDATE+1/1440
10 ,interval => 'SYSDATE+1/1440 '
11 ,no_parse => FALSE
12 );
13 JobNumber := to_char(X);
14* END;
15 /
PL/SQL procedure successfully completed.
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so for that I have used the following command line:
SQL> SELECT JOB_NAME FROM DBA_SCHEDULER_JOBS WHERE JOB_NAME = 'SCOTT.SPLITSMS';
SELECT JOB_NAME FROM DBA_SCHEDULER_JOBS WHERE JOB_NAME = 'SCOTT.SPLITSMS'
ERROR at line 1:
ORA-00942: table or view does not exist
how to check my job name from the database...
what is the command used to check the job_name ????
and how can i ensure that my job scheduler is running properly...???
please help ........my dear friends.....!

957029 wrote:
Now I want to check whether the job has been really created or not?
so for that I have used the following command line:
SQL> SELECT JOB_NAME FROM DBA_SCHEDULER_JOBS WHERE JOB_NAME = 'SCOTT.SPLITSMS';
SELECT JOB_NAME FROM DBA_SCHEDULER_JOBS WHERE JOB_NAME = 'SCOTT.SPLITSMS'
ERROR at line 1:
ORA-00942: table or view does not existYou can use DBA_* views only if the User has been Granted a DBA Privilege.
how to check my job name from the database...
what is the command used to check the job_name ????You can use USER_JOBS view to check. But, is it not that you have just created the Job, so you must be knowing it?
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How to have report which use the odbc name of the database

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Hello,
That's the general work around, basically fully qualifying the database.user info.
Have a look at these links, lots of great samples on how to use all of them:
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http://wiki.sdn.sap.com/wiki/display/BOBJ/BusinessObjectsHome
Enterprise Samples (including managed and unmanaged ras)
http://wiki.sdn.sap.com/wiki/display/BOBJ/BusinessObjectsSDKSampleApplications
Non-Enterprise Samples
http://wiki.sdn.sap.com/wiki/display/BOBJ/CrystalReportsSDKSampleApplications
Exporting Samples (RAS)
http://wiki.sdn.sap.com/wiki/display/BOBJ/NETRASSDK+Samples#NETRASSDKSamples-Exporting%2FPrinting
Thank you
Don

The Database Connection could not be found

Hi guys,
we did a complete new installation of EPM 11.1.2.1 for a testing environment.
Did the installation 1-1 to our production system.
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Are you using a NAS share for storing reporting and analysis files? I mean the RM1 folder?

I need to know the name of the database table and the fields in that table

hi,
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Timeout: Tuxedo kills the service but not the database connection

Hi all,
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At this point I would like Tuxedo to notify DB2 database as well in order to stop processing the SQL. Instead the SQL continues running on the database (also if the service is killed) and this produce a gradual slow down of the performances.
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Regards,
Todd Little
Oracle Tuxedo Chief Architect

Name of the database connection

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