JDBC or RandomAccessFile?

I'm thinking of developing a pure Java application/applet that gets line inputs from text files and stores them in either a random access file or a database, whichever is workable, for later retrieval. I was told I may need SQL so I am thinking of JDBC, which may result in an applet/application that is not pure Java. On the other hand, I am also thinking of using random access files to create a pure Java applet/application. Any advise?

blozada said
I don't have an SQL database. I am just an instructor
trying to develop a Java solution to solve the problem
of administering, checking, and grading of manual
classroom examinations.
How about the java.sql package? Can it help me?Nothing you have said indicates that you need a database.
If you are beginner in java and especially if you are beginner in programming then I would suggest that you absolutely not use a database. Even if that is the best solution. The complexity would be overwhelming.
If however, you are not a beginner and you want to learn some database skills then there are free databases. You should start with seeing if you have MS Access. That is the best choice. If not then MySQL is probably workable. MySQL is probably harder than MS Access, because it requires more work to get it going. Which could be an advantage if you want the technical challenge but irritating otherwise. There are more obscure free ones but I wouldn't suggest them unless you really want a challenge.

Similar Messages

Jdbc ms access problem

hi,
i am trying to do a simple query to update database information in
ms access running on the same machine using XP. i have been testing it and after inserting about 200 records it slows down to almost a standstill.
here is my code:
import java.io.*;
import java.sql.*;
import javax.swing.*;
public class AutomatedUpdate
private Connection conn;
private Statement statement;
private RandomAccessFile custFile;
//private RandomAccessFile ordersFile;
public AutomatedUpdate()
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
conn = DriverManager.getConnection("jdbc:odbc:labelweb_db");
//pre-generated sql statements to do db insert.
custFile = new RandomAccessFile("test.txt", "r");
//ordersFile = new RandomAccessFile("tbl_Orders.sql", "r");
String delCustQuery = "Delete * From tbl_Customers";
//String delOrdersQuery = "Delete * From tbl_Orders";
statement = conn.createStatement();
statement.execute(delCustQuery);
// statement = conn.createStatement();
// statement.executeQuery(delOrdersQuery);
catch(Exception e){e.printStackTrace();}
dumpData(custFile);
//dumpData(ordersFile);
System.exit(0);
public void dumpData(RandomAccessFile file)
StringBuffer buf = new StringBuffer();
String text;
String query;
try
while((text = file.readLine()) != null)
if(text.startsWith("#") || text.equals(""))
continue;
statement = conn.createStatement();
query = text.substring(0,text.length()-1);
for(int i = 0; i < 10000; i++)
     if(i % 10 == 0)
          System.out.println(i);
statement = conn.createStatement();
statement.execute(query);
conn.close();
catch(Exception e){e.printStackTrace();}
public static void main(String[] args)
AutomatedUpdate automatedUpdate1 = new AutomatedUpdate();
Any thoughts / suggestions would be greatly appreciated.
Thanks in advance,
Aaron.

first there are a few screwy things about the code you posted...
public void dumpData(RandomAccessFile file){
StringBuffer buf = new StringBuffer(); //ooookkkkay
String text;
String query;
try{
    while((text = file.readLine()) != null){
      if(text.startsWith("#") || text.equals(""))
        continue;
      statement = conn.createStatement();
      query = text.substring(0,text.length()-1);
      for(int i = 0; i < 10000; i++){
        if(i % 10 == 0){
          System.out.println(i);
        }// closing the if
        statement = conn.createStatement();// oh dear why is this here?
        statement.execute(query);
      }// closeing the for
      conn.close();// not good still inside the while
    }// closing the while
}catch(Exception e){e.printStackTrace();}// closing the try/catch block
}here are my comments.
1) What is the StringBuffer buf for? You initialize it but never use it.
2) You are inserting the same query 10000 times on each
pass. See how the createStatement and execute blocks are inside the for
loop. I somehow don't think this is what you are intending.
3) You are also closing the connection each time you go through so if
your program ever got to a second query it would blow up any. You should
probably close you connection in the same place you create it but after
the method call.
4) You are not explicitly closing any statements and since you are
making so many this can't help.
so here is my revision of your method.
public void dumpData(RandomAccessFile file)throws IOException, SQLException{
String text;
String query;
Statement s = conn.createStatement();
while((text = file.readLine()) != null){
    if(text.startsWith("#") || text.equals(""))
      continue;
    query = text.substring(0,text.length()-1);
    s.execute(query);
s.close();
}so why don't you give this a while and if you are still having problems
we will see what we can do.

RandomAccessFile

This class does not have a writeObject or readObject method like the ObjectOutputStream and the ObjectInputStream
How am I supposed to write and read objects using random access files? Is there anyway besides just manually writing every primitive data to the file and then reading it again the same way?
I did something insane like this:
     try
               RandomAccessFile file;
               file = new RandomAccessFile(fileName, "r");
               ntot = "";
               for(int i = 0; i < 10; i ++)
                    //temp = file.readChar();
                    //data[count++] = temp;
                    //record = new Person("Person number" + i , i);
                    record = new Person();
                    record.read(file);
                    n1 = record.getName();
                    n2 = record.getAge();
                    ntot += n1 + n2 + "\n";
          catch(IOException ioException)
               JOptionPane.showMessageDialog(null, "no file available");
               //     stuff = new String(data).replace('\0' , ' ');
          }The person object looks like this:
class Person
     String name;
     int age;
     public Person()
          name = "";
          age = 0;
     public Person(String name1, int age1) throws IOException
          name = name1;
          age = age1;
     public String getName(){return name;}
     public int getAge(){return age;}
     public void write(RandomAccessFile file) throws IOException
          //StringBuffer buffer = null;
          //buffer = name;
          file.writeChars(name);
          file.writeInt(age);
     public void read(RandomAccessFile file) throws IOException
          char temp;
          int counter = 0;
          do
               temp = file.readChar();
               name += name + temp;
               counter++;
          }while(counter != 3);
          age = file.readInt();
               JOptionPane.showMessageDialog(null, ""+ counter);
     }But it doesn't work well...I do get some data, but It gives me weird characters and stuff.
How can we use random access files by just manipulating objects?

so you're saying that the only way to manipulate
objects in files is by using suquential files?
What am I supposed to do then? use JDBC?Either that or use a data model you load completely from a file, manipulate "in memory", and store again when you done.
Byte-wise manipulation is exactly what you need to do otherwise, but serialized objects aren't supposed to be manipulated - it's possible, but quite difficult.

Using RandomAccessFile with 9iAS

I have a question about reading (and writing) ASCII files with fixed-length records in an application that will run under OC4J. (FWIW, the application uses no EJBs.)
Since the J2EE spec forbids standard file i/o, it would seem that using RandomAccessFile is not an option.
Purchasing a JDBC driver for text files is not an option for our project, either.
Does 9iAS provide any other options, besides ignoring the J2EE spec?
TIA,
Al Margheim

Al -- I think it's only the EJB spec which forbids the use of IO and threading operations. As I understand it, from a servlet you should be OK to write to the filesystem. Of course, you'll need to do the work to make sure your app is threadsafe and IO safe (ie two concurrent requests can't try and write to the same file).
cheers
-steve-

Cannot assign an empty string to a parameter with JDBC type VARCHAR

Hi,
I am seeing the aforementioned error in the logs. I am guessing its happening whenever I am starting an agent instance in PCo. Can somebody explain whats going on?
Regards,
Chanti.
Heres the complete detail from logs -
Log Record Details
Message: Unable to retreive path for , com.sap.sql.log.OpenSQLException: Failed to set the parameter 1 of the statement >>SELECT ID, PARENTID, FULLPATH, CREATED, CREATEDBY, MODIFIED, MODIFIEDBY, REMOTEPATH, CHECKEDOUTBY FROM XMII_PATHS WHERE FULLPATH = ? <<: Cannot assign an empty string to a parameter with JDBC type >>VARCHAR<<.
Date: 2010-03-12
Time: 11:32:37:435
Category: com.sap.xmii.system.FileManager
Location: com.sap.xmii.system.FileManager
Application: sap.com/xappsxmiiear

Sounds like a UI browsing bug (when no path is selected from a catalog tree folder browser) - I would suggest logging a support ticket so that it can be addressed.

JDBC Lookup - Import table data from a different schema in same DB

Hi XI Experts,
We are facing an issue while importing a Database table into the external definition in PI 7.1.
The details are as below:
I have configured user 'A' in PI communication channel to access the database. But the table that I want to access is present in schema "B". Due to this, I am unable to view the table that I have to import in the list available.
In other words, I am trying to access a table present in a different schema in the same database. Please note that my user has been given all the required permissions to access different schema. Even then, I am unable to access the table in different schema.
Kindly provide your valuable suggestions as to how I can import table which is present in another schema but in the same Database.
Regards,
Subbu

If you are using PI 7.1, then you can do JDBC Lookup to import JDBC meta data (table structures from DB). Configure a jdbc receiver communication channel where you specify username and password which has permission to access schema A and Schema B of database. Specify database name in the connection string. Then you might have access to import both schema.
Please refer these links
SAP PI 7.1 Mapping Enhancements Series: Graphical Support for JDBC and RFC Lookups
How to use JDBC Lookup in PI 7.1 ?

Error while creating a JDBC connection to Oracle 11g using WLS 6.1

Hi
I am trying to connect to Oracle 11g database on Weblogic 6.1 server.
First of all i would like to know if this is compatible?
The environement that i have is this
1. JDK 1.3
2. Database 11g is on remote system
3. Oracle client on my local system ( Connecting to the 11g DB through the client works fine)
4. Weblogic server 6.1
5. Currently the application is connected to Oracle 10g DB and working fine(We are attempting to move it to 11g)
Below are the steps that i followed to create the connection:
1. Made an entry for the datasource in config.xml under <WLS_DOMAIN>/config folder as below
<JDBCConnectionPool DriverName="oracle.jdbc.driver.OracleDriver"
MaxCapacity="4" Name="CADConnectionPool"
Properties="user=abc_proxy;password=proxy_abc;dll=ocijdbc8;protocol=thin"
RefreshMinutes="5" ShrinkPeriodMinutes="10" Targets="CAsvr"
TestConnectionsOnRelease="true" TestConnectionsOnReserve="true"
TestTableName="dual" URL="jdbc:oracle:thin:@gen11t-ora.db.lab.xyz.com:1530:GEN11T"/>
2. Restarted the server.
3. Ran the application and get the following error on the server console:
<Aug 22, 2011 12:39:42 AM CDT> <Error> <JDBC> <Cannot startup connection pool "C
ADConnectionPool" weblogic.common.ResourceException:
Could not create pool connection. The DBMS driver exception was:
java.lang.ArrayIndexOutOfBoundsException
at oracle.security.o3logon.C0.r(C0)
at oracle.security.o3logon.C0.l(C0)
at oracle.security.o3logon.C1.c(C1)
at oracle.security.o3logon.O3LoginClientHelper.getEPasswd(O3LoginClientH
elper)
at oracle.jdbc.ttc7.O3log.<init>(O3log.java:289)
at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:251)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:246)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.ja
va:365)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:260)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Con
nectionEnvFactory.java:193)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Con
nectionEnvFactory.java:134)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllo
cator.java:705)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.j
ava:282)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.j
ava:650)
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:360)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(Dep
loymentTarget.java:285)
at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeploy
ments(DeploymentTarget.java:239)
at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(
DeploymentTarget.java:199)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy31.updateDeployments(Unknown Source)
at weblogic.management.configuration.ServerMBean_CachingStub.updateDeplo
yments(ServerMBean_CachingStub.java:2977)
at weblogic.management.mbeans.custom.ApplicationManager.startConfigManag
er(ApplicationManager.java:372)
at weblogic.management.mbeans.custom.ApplicationManager.start(Applicatio
nManager.java:160)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy42.start(Unknown Source)
at weblogic.management.configuration.ApplicationManagerMBean_CachingStub
.start(ApplicationManagerMBean_CachingStub.java:480)
at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
at weblogic.management.Admin.finish(Admin.java:644)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
at weblogic.Server.main(Server.java:35)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Con
nectionEnvFactory.java:209)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Con
nectionEnvFactory.java:134)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllo
cator.java:705)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.j
ava:282)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.j
ava:650)
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:360)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(Dep
loymentTarget.java:285)
at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeploy
ments(DeploymentTarget.java:239)
at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(
DeploymentTarget.java:199)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy31.updateDeployments(Unknown Source)
at weblogic.management.configuration.ServerMBean_CachingStub.updateDeplo
yments(ServerMBean_CachingStub.java:2977)
at weblogic.management.mbeans.custom.ApplicationManager.startConfigManag
er(ApplicationManager.java:372)
at weblogic.management.mbeans.custom.ApplicationManager.start(Applicatio
nManager.java:160)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy42.start(Unknown Source)
at weblogic.management.configuration.ApplicationManagerMBean_CachingStub
.start(ApplicationManagerMBean_CachingStub.java:480)
at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
at weblogic.management.Admin.finish(Admin.java:644)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
at weblogic.Server.main(Server.java:35)
Can't load scjd12.dll, file not found java.library.path=C:\jdk1.3.1_11\bin;.;C:\WINDOWS\system32;C:\WINDOWS;.\bin;C:\P
rogram Files\Lotus\Notes\Data;C:\Program Files\Lotus\Notes;C:\Program Files\Java
\jre1.5.0_17\bin;C:\Program Files\Java\j2re1.4.2_06\bin;C:\Oracle\bin;C:\Program
Files\Oracle\jre\1.3.1\bin;C:\Program Files\Oracle\jre\1.1.8\bin;C:\WINDOWS\sys
tem32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32\nls;C:\WINDOWS\sys
tem32\nls\ENGLISH;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Rational
\common;C:\Program Files\Rational\ClearCase\bin;C:\apache-ant-1.6.5\bin;C:\jdk1.
3.1_11\bin;C:\Program Files\Citrix\ICAService\;C:\Program Files\Citrix\System32\
;Z:.
<Aug 22, 2011 12:38:06 AM CDT> <Info> <JDBC> <Sleeping in createResource()>
<Aug 22, 2011 12:38:07 AM CDT> <Error> <JDBC> <Cannot startup connection pool "c
ispool" weblogic.common.ResourceException:
Could not load 'com.neon.jdbc.Driver
If this is a type-4 JDBC driver, it could occur if the JDBC
driver is not in the system CLASSPATH.
If this is a type-2 JDBC driver, it may also indicate that
the Driver native layers(DBMS client lib or driver DLL)
have not been installed properly on your system
or in your PATH environment variable.
This is most likely caused by one of the following:
1. The native layer SO, SL, or DLL could not be found.
2. The file permissions on the native layer SO, SL, or DLL
have not been set properly.
3. The native layer SO, SL, or DLL exists, but is either
invalid or corrupted.
For more information, read the installation documentation
for your JDBC Driver, available from:
http://e-docs.bea.com
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Con
nectionEnvFactory.java:212)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Con
nectionEnvFactory.java:134)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllo
cator.java:705)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.j
ava:282)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.j
ava:650)
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:360)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(Dep
loymentTarget.java:285)
at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeploy
ments(DeploymentTarget.java:239)
at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(
DeploymentTarget.java:199)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy31.updateDeployments(Unknown Source)
at weblogic.management.configuration.ServerMBean_CachingStub.updateDeplo
yments(ServerMBean_CachingStub.java:2977)
at weblogic.management.mbeans.custom.ApplicationManager.startConfigManag
er(ApplicationManager.java:372)
at weblogic.management.mbeans.custom.ApplicationManager.start(Applicatio
nManager.java:160)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy42.start(Unknown Source)
at weblogic.management.configuration.ApplicationManagerMBean_CachingStub
.start(ApplicationManagerMBean_CachingStub.java:480)
at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
at weblogic.management.Admin.finish(Admin.java:644)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
at weblogic.Server.main(Server.java:35)
Would like some help on this asap as the project is in critical stage.
Thanks

The driver being used by your weblogic is too old and incompatible with the DBMS. Upgrade the driver.

Error while running a test case in Jcaps 6 JDBC project

I encountered an error while running the testcase for a JDBC BC project in Jcaps 6.
BPCOR-6135:A fault was not handled in the process scope; Fault Name is {http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure; Fault Data is null. Sending errors for the pending requests in the process scope before terminating the process instance
Caused by: I18N: BPCOR-3023: Selection Failure occurred in BPEL({http://enterprise.netbeans.org/bpel/DBSample/Db}Db
Kindly suggest a solution

It seems to be a very common error. Try checking your map assignments when the source (from) is empty (null). These mappings with null values may produce the error you are facing...
Good luck!

Calling Glassfish jdbc Datasorce in EJB 3.0 with @Resource annotation.

I tried EJB 3.0 with netbeans and glassfish and "{color:#ff0000}+_ORACLE_+{color}". I wanted to link the oracle database to GLASSFISH server and I followed the instructions.After I clicked 'ping' button, it displayed as *{color:#339966}'PING SUCCEED".{color}*
But I couldn't call my datasource from the eje stateless session bean with @Resource annotation.It resulted a dependency injection exception. Can some one tell me how to do this properly.
{color:#ff0000}Thanks in Advance!!!!{color}

Frank, yes, I can modify if it is necessary the datasource but, how can I say in the xxxx-jdbc.xml not to use JTA transactions when this data source is called inside a ejb 3.0 method?
I'm using Jdev11g and the integrated Web Logic Server.
Thank's

Error while executing a JDBC to Idoc scenario : No standard agreement found

Hello SAP PI Gurus,
I am having a JDBC to idoc Scenario .And the interface is running at 10 min of duration.
<SAP:AdditionalText>No standard agreement found for ,
BS_EXT_CTBSREPDB, , BS_ERPQAS_QE1_320, http://XYZ.com/FI/FI_FI_01/Charges, FIDCC2</SAP:AdditionalText>.
While i test the configuration...i get an error in reciever agreement as mentioned above.
Can you pls help me in resolving this issue.
Regards,
Ravi

Hi,
I think the problem is with namespace....for IDOC the namespace will be "urn:sap-com:document:sap:idoc:messages"...but in your case it is different.....i.e http:....etc.....please check whether you 've used the same IDOC withe above mentioned namespace in all the configuration objects like interface determination, receiveragreement etc.....
Thanks
Priyanka

Error while creating a report that uses Oracle OCI JDBC connectivity

Please let me know why my CR and LF characters are removed from my forum posting *****
Hi,
I was trying to create a report that uses Oracle OCI JDBC connectivity. I am using Eclipse3.4 download from "cr4e-all-in-one-win_2.0.2.zip". I have successfully created a JDBC OCI connection.
The connection parameters are given below:
URL: jdbc:oracle:oci8:@xe
Database: xe
username: <userName>
password: <password>
I have tested the above connection in Data source Explorer and it works fine!!!
But I am getting the following error when I drag-and-drop a table from the list of tables. Not sure what I am missing here? Any help is highly appreciated.
com.businessobjects.reports.jdbinterface.common.DBException: InvalidURLOrClassName
     at com.crystaldecisions.reports.queryengine.driverImpl.jdbc.JDBCConnection.Open(Unknown Source)
     at com.crystaldecisions.reports.queryengine.JDBConnectionWrapper.Open(SourceFile:123)
     at com.crystaldecisions.reports.queryengine.Connection.br(SourceFile:1771)
     at com.crystaldecisions.reports.queryengine.Connection.bs(SourceFile:491)
     at com.crystaldecisions.reports.queryengine.Connection.t1(SourceFile:2979)
     at com.crystaldecisions.reports.queryengine.Table.u7(SourceFile:2408)
     at com.crystaldecisions.reports.dataengine.datafoundation.AddDatabaseTableCommand.new(SourceFile:529)
     at com.crystaldecisions.reports.common.CommandManager.a(SourceFile:71)
     at com.crystaldecisions.reports.common.Document.a(SourceFile:203)
     at com.businessobjects.reports.sdk.requesthandler.f.a(SourceFile:175)
     at com.businessobjects.reports.sdk.requesthandler.DatabaseRequestHandler.byte(SourceFile:1079)
     at com.businessobjects.reports.sdk.JRCCommunicationAdapter.do(SourceFile:1163)
     at com.businessobjects.reports.sdk.JRCCommunicationAdapter.if(SourceFile:657)
     at com.businessobjects.reports.sdk.JRCCommunicationAdapter.a(SourceFile:163)
     at com.businessobjects.reports.sdk.JRCCommunicationAdapter$2.a(SourceFile:525)
     at com.businessobjects.reports.sdk.JRCCommunicationAdapter$2.call(SourceFile:523)
     at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
     at java.util.concurrent.FutureTask.run(Unknown Source)
     at com.businessobjects.crystalreports.designer.core.util.thread.ExecutorWithIdleProcessing$3.doWork(ExecutorWithIdleProcessing.java:182)
     at com.businessobjects.crystalreports.designer.core.util.thread.AbstractCancellableRunnable.run(AbstractCancellableRunnable.java:69)
     at com.businessobjects.crystalreports.designer.core.util.thread.PriorityTask.run(PriorityTask.java:75)
     at com.businessobjects.crystalreports.designer.core.util.thread.PriorityCompoundCancellableRunnable.runSubtask(PriorityCompoundCancellableRunnable.java:187)
     at com.businessobjects.crystalreports.designer.core.util.thread.PriorityProgressAwareRunnable.runSubtask(PriorityProgressAwareRunnable.java:90)
     at com.businessobjects.crystalreports.designer.core.util.thread.PriorityCompoundCancellableRunnable.doWork(PriorityCompoundCancellableRunnable.java:144)
     at com.businessobjects.crystalreports.designer.core.util.thread.AbstractCancellableRunnable.run(AbstractCancellableRunnable.java:69)
     at com.businessobjects.crystalreports.designer.core.util.thread.ExecutorWithIdleProcessing$IdleTask.run(ExecutorWithIdleProcessing.java:320)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Thanks
Karthik
Edited by: KARTHIK1 on Oct 14, 2009 9:38 PM

Hi Ted,
Thanks for the feedback. I was able to create a report in Creystal Reports Designer 2008 using OCI. It is not allowing only in the Eclipse plugin. In our environment we are not allowed to user Oracle thin connections and ONLY OCI is allowed.
1) Can you please let me know if there is a way to do this?
2) Will it allow data sources using native database driver?
3) If so, can I use JRC to create these reports from a desktop java program?
Thanks & Regards
Karthik
Edited by: KARTHIK1 on Oct 15, 2009 4:38 PM

Error got while creating a jdbc in Weblogic server 9.2

Hi All,
I am getting the following error
+"Warning! Connectivity to backend database not verified. This is either because required connection pool attributes "TestConnectionsOnReserve" or "TestConnectionsOnRelease" have not been enabled, or an invalid value has been specified for attribute "TestTableName". Please check the server log for more details".+
While creating a jdbc datasource in Weblogic 9.2. When I add the target and activate the setting and while testing only I am getting this error. While before adding target "Test connection" works good.
Please help me in fixing this bug.
Thank you in Advance.
With regards
John
Edited by: user7329724 on Dec 16, 2008 11:25 AM
Edited by: user7329724 on Dec 16, 2008 11:26 AM

Please confirm the "Test Connections On Reserve" attribute is enabled. You can find this property in Administration Console--->Data Sources--->Your Data Source Name--->Configuration--->Connection Pool--->Advanced

** How to use TO_DATE function in Stored Proc. for JDBC in ABAP-XSL mapping

Hi friends,
I use ABAP-XSL mapping to insert records in Oracle table. My Sender is File and receiver is JDBC. We use Oracle 10g database. All fields in table are VARCHAR2 except one field; this is having type 'DATE'.
I use Stored procedure to update the records in table. I have converted my string into date using the Oracle TO_DATE function. But, when I use this format, it throws an error in the Receiver CC. (But, the message is processed successfully in SXMB_MONI).
The input format I formed like below:
<X_EMP_START_DT hasQuot="No" isInput="1" type="DATE">
Value in Payload is like below.
<X_EMP_START_DT hasQuot="No" isInput="1" type="DATE">TO_DATE('18-11-1991','DD-MM-YYYY')</X_EMP_START_DT>
Error in CC comes as below:
Error processing request in sax parser: Error when executing statement for table/stored proc. 'SP_EMP_DETAILS' (structure 'STATEMENT'): java.lang.NumberFormatException: For input string: "TO_DATE('18"
Friends, I have tried, but unable to find the correct solution to insert.
Kindly help me to solve this issue.
Kind Regards,
Jegathees P.
(But, the same is working fine if we use direct method in ABAP-XSL ie. not thru Stored Procedure)

Hi Sinha,
Thanks for your reply.
I used the syntax
<xsl:call-template name="date:format-date">
<xsl:with-param name="date-time" select="string" />
<xsl:with-param name="pattern" select="string" />
</xsl:call-template>
in my Abap XSL. But, its not working correctly. The problem is 'href' function to import "date.xsl" in my XSLT is not able to do that. The system throws an error. Moreover, it is not able to write the command 'extension-element-prefixes' in my <xsl:stylesheet namespace>
May be I am not able to understand how to use this.
Anyway, I solved this problem by handling date conversion inside Oracle Stored Procedure. Now, its working fine.
Thank you.

Calling stored procedure multiple times in the JDBC receiver

Hi,
I am calling the stored procedure(SP) to update a DB table in the JDBC receiver.
SP has 10 input parameters, and SP can receive one value for each parameter at a time.
In my case, i will have multiple rows to insert using SP.i.e multiple values for each parameter.
Its working correctly for a single value for each parameter, but when i have multiple values i want to call the SP multiples times.
Is this possible and how?
Thanks,
Varghese.

Varghese,
I think you can have multiple statements in the JDBC Adapter's XML, as in http://help.sap.com/saphelp_nw04/helpdata/en/2e/96fd3f2d14e869e10000000a155106/content.htm.
Here the StatementName1 node can be inserted into your JDBC XML as often as you want.
Kind regards,
Koen

Query works in Oracle Client but not JDBC

The query is as follows:
SELECT COUNT(*) THE_COUNT FROM sentorders WHERE ordersentdate BETWEEN '15-JAN-01' and '15-JAN-03';When I run this query in the Oracle client (SQL+) it tells me that THE_COUNT is 4 which is correct but when I use the following JDBC code I get THE_COUNT is 0 which is incorrect.
public ResultSet viewTotalSentOrdersByDate()
throws SQLException, Exception {
      String beginDate = "15-JAN-01";
      String endDate = "15-JAN-03";
      ResultSet rs = null;
    try {
      String queryString = ("SELECT COUNT(*) THE_COUNT FROM sentorders WHERE ordersentdate BETWEEN '" + beginDate + "' and '" + endDate + "'");
      System.out.println(queryString);
      Statement stmt = con.createStatement();
      rs = stmt.executeQuery(queryString);
      while(rs.next()) {
       System.out.println(rs.getString("THE_COUNT"))
    } catch (SQLException sqle) {
      error = "SQLException: Could not execute the query.";
      throw new SQLException(error);
    } catch (Exception e) {
      error = "An exception occured.";
      throw new Exception(error);
    return rs;
}Thanks for the help
Zac

The query is as follows:
SELECT COUNT(*) THE_COUNT FROM sentorders WHERE ordersentdate BETWEEN '15-JAN-01' and '15-JAN-03';When I run this query in the Oracle client (SQL+) it tells me that THE_COUNT is 4 which is correct but when I use the following JDBC code I get THE_COUNT is 0 which is incorrect.
public ResultSet viewTotalSentOrdersByDate()
throws SQLException, Exception {
String beginDate = "15-JAN-01";
String endDate = "15-JAN-03";
ResultSet rs = null;
try {
String queryString = ("SELECT COUNT(*) THE_COUNT FROM sentorders WHERE ordersentdate BETWEEN '" + beginDate + "' and '" + endDate + "'");
System.out.println(queryString);
Statement stmt = con.createStatement();
rs = stmt.executeQuery(queryString);
while(rs.next()) {
System.out.println(rs.getString("THE_COUNT"))
} catch (SQLException sqle) {
error = "SQLException: Could not execute the query.";
throw new SQLException(error);
} catch (Exception e) {
error = "An exception occured.";
throw new Exception(error);
return rs;
}Thanks for the help
Zac

JDBC or RandomAccessFile?

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