Data access from weblogic
Hi,trying to figure out the most optimum of data access from weblogic. We initially used to do a preparestatement and then execute inside the dopost method of the servlets, but this causes the statement to be parsed everytime. To avoid this we decided to prepare the statements once in the init method of the servlets and do only an execute inside the dopost, but this causes the data in the resutl set objects to be mixed up if two or more users simultaneously accessed the same servlet(resutlsets are not thread safe??). To resolve this problem we did the executes inside a synchronized block but this is not very good for performance.So what is the best way?RgdsHarish
Make sure you declare your resultset locally.
Michael Girdley
BEA Systems
Learning WebLogic? http://learnweblogic.com
"Harish" <[email protected]> wrote in message
news:3acccc04$[email protected]..
Hi,trying to figure out the most optimum of data access from weblogic. Weinitially used to do a preparestatement and then execute inside the dopost
method of the servlets, but this causes the statement to be parsed
everytime. To avoid this we decided to prepare the statements once in the
init method of the servlets and do only an execute inside the dopost, but
this causes the data in the resutl set objects to be mixed up if two or more
users simultaneously accessed the same servlet(resutlsets are not thread
safe??). To resolve this problem we did the executes inside a synchronized
block but this is not very good for performance.So what is the best
way?RgdsHarish
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I am working on a fairly large scale ERP application that is written in Java both on the front end, and middle tier ( using a JBoss application server ).
All of the database access happens in my app server, and when I wanted to get peoples opinions on the best way to extract and pass data to and from the database from the app server, and of course to and from the client.
I am using JDBC to make database calls and extra data from the database. This is of course pretty trivial. And I first started writing POJO that represent tables in my database. I then wrote a faily length method that uses reflection to call the setting methods and pass in the objects returned from the database result set. This of course becomes tricky when you start to join multiple tables together. And often you only need a small subset of columns in a table and don't require an object with all the columns from the table ( some set, and some as null objects ).
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I have weblogic 8.1 running on win2000. We use IIS running on the same machine
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Hi Friends,
I want to access data from database, User will enter Start Date and end date , based on that , data will be get retried.
Is it possible to write a SQL Query, Where A SQL Query will take care user start and end date. Start date and end date is not fixed, it will be vary based on user.
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Thanks,
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Data access from Access Database
I want collect some data from access, I have created a frame with swing componet, now when I am searching data with some variable from Access database , it is not comming, but in simple case all data are comming in differnt places in my frame.
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Senior Support Engineer AGS Product Support, Global Support Center Canada
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Standalone application can't get JDBC data source from Weblogic 10.3
We have the following configuration :
A Weblogic server 10.3 (default installation).
The server contains a JMS queue (jndi name: "DMQ") and JDBC data sources (jndi names: Oracle thin XA - "dataSource", MS SQL - "dataSource1")
We have built wlfullclient5.jar for Java 1.5 ([http://edocs.bea.com/wls/docs103/client/jarbuilder.html#wp1078122]) (according to the docs)
And now we use a test standalone application with the wlfullclient5.jar :
public static void main (String[] args) throws NamingException {
bq. Hashtable<String, String> env = new Hashtable<String, String>(); \\ env.put(Context.+INITIAL_CONTEXT_FACTORY+, "weblogic.jndi.WLInitialContextFactory"); \\ env.put(Context.+PROVIDER_URL+, "http://serv1:7001"); \\ env.put(Context.+SECURITY_CREDENTIALS+, "weblogic"); \\ env.put(Context.+SECURITY_PRINCIPAL+, "weblogic"); \\ InitialContext ic = new InitialContext(env); \\ \\ System.+out+.println("Get DMQ"); \\ ic.lookup("DMQ"); \\ System.+out+.println("Get dataSource"); \\ ic.lookup("dataSource");
bq. System.+out+.println("Get dataSource1"); \\ ic.lookup("dataSource1"); \\ System.+out+.println("Done"); \\
Here is the output when connected to WLS 10.3:
bq. Get DMQ \\ Get dataSource \\ Exception in thread "Main Thread" java.lang.AssertionError: Failed to generate class for weblogic.jdbc.common.internal.RmiDataSource_1030_WLStub \\ at weblogic.rmi.internal.StubGenerator.generateStub(_StubGenerator.java:790_) \\ at weblogic.rmi.internal.StubGenerator.generateStub(_StubGenerator.java:779_) \\ at weblogic.rmi.extensions.StubFactory.getStub(_StubFactory.java:74_) \\ at weblogic.rmi.internal.StubInfo.resolveObject(_StubInfo.java:213_) \\ at weblogic.rmi.internal.StubInfo.readResolve(_StubInfo.java:207_) \\ at sun.reflect.NativeMethodAccessorImpl.invoke0(_Native Method_) \\ at sun.reflect.NativeMethodAccessorImpl.invoke(_NativeMethodAccessorImpl.java:39_) \\ at sun.reflect.DelegatingMethodAccessorImpl.invoke(_DelegatingMethodAccessorImpl.java:25_) \\ at java.lang.reflect.Method.invoke(_Method.java:585_) \\ at java.io.ObjectStreamClass.invokeReadResolve(_ObjectStreamClass.java:1033_) \\ at java.io.ObjectInputStream.readOrdinaryObject(_ObjectInputStream.java:1728_) \\ at java.io.ObjectInputStream.readObject0(_ObjectInputStream.java:1305_) \\ at java.io.ObjectInputStream.readObject(_ObjectInputStream.java:348_) \\ at weblogic.utils.io.ChunkedObjectInputStream.readObject(_ChunkedObjectInputStream.java:197_) \\ at weblogic.rjvm.MsgAbbrevInputStream.readObject(_MsgAbbrevInputStream.java:564_) \\ at weblogic.utils.io.ChunkedObjectInputStream.readObject(_ChunkedObjectInputStream.java:193_) \\ at weblogic.rmi.internal.ObjectIO.readObject(_ObjectIO.java:62_) \\ at weblogic.rjvm.ResponseImpl.unmarshalReturn(_ResponseImpl.java:240_) \\ at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(_ClusterableRemoteRef.java:348_) \\ at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(_ClusterableRemoteRef.java:259_) \\ at weblogic.jndi.internal.ServerNamingNode_1030_WLStub.lookup(Unknown Source) \\ at weblogic.jndi.internal.WLContextImpl.lookup(_WLContextImpl.java:392_) \\ at weblogic.jndi.internal.WLContextImpl.lookup(_WLContextImpl.java:380_) \\ at javax.naming.InitialContext.lookup(_InitialContext.java:351_) \\ at test.main(_test.java:23_) \\ Caused by: java.lang.reflect.InvocationTargetException \\ at sun.reflect.NativeConstructorAccessorImpl.newInstance0(_Native Method_) \\ at sun.reflect.NativeConstructorAccessorImpl.newInstance(_NativeConstructorAccessorImpl.java:39_) \\ at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(_DelegatingConstructorAccessorImpl.java:27_) \\ at java.lang.reflect.Constructor.newInstance(_Constructor.java:494_) \\ at weblogic.rmi.internal.StubGenerator.generateStub(_StubGenerator.java:788_) \\ at weblogic.rmi.internal.StubGenerator.generateStub(_StubGenerator.java:779_) \\ at weblogic.rmi.extensions.StubFactory.getStub(_StubFactory.java:74_) \\ at weblogic.rmi.internal.StubInfo.resolveObject(_StubInfo.java:213_) \\ at weblogic.rmi.internal.StubInfo.readResolve(_StubInfo.java:207_) \\ at sun.reflect.NativeMethodAccessorImpl.invoke0(_Native Method_) \\ at sun.reflect.NativeMethodAccessorImpl.invoke(_NativeMethodAccessorImpl.java:39_) \\ at sun.reflect.DelegatingMethodAccessorImpl.invoke(_DelegatingMethodAccessorImpl.java:25_) \\ at java.lang.reflect.Method.invoke(_Method.java:585_) \\ at java.io.ObjectStreamClass.invokeReadResolve(_ObjectStreamClass.java:1033_) \\ at java.io.ObjectInputStream.readOrdinaryObject(_ObjectInputStream.java:1728_) \\ at java.io.ObjectInputStream.readObject0(_ObjectInputStream.java:1305_) \\ at java.io.ObjectInputStream.readObject(_ObjectInputStream.java:348_) \\ at weblogic.utils.io.ChunkedObjectInputStream.readObject(_ChunkedObjectInputStream.java:197_) \\ at weblogic.rjvm.MsgAbbrevInputStream.readObject(_MsgAbbrevInputStream.java:564_) \\ at weblogic.utils.io.ChunkedObjectInputStream.readObject(_ChunkedObjectInputStream.java:193_) \\ at weblogic.rmi.internal.ObjectIO.readObject(_ObjectIO.java:62_) \\ at weblogic.rjvm.ResponseImpl.unmarshalReturn(_ResponseImpl.java:240_) \\ at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(_ClusterableRemoteRef.java:348_) \\ at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(_ClusterableRemoteRef.java:259_) \\ at weblogic.jndi.internal.ServerNamingNode_1030_WLStub.lookup(Unknown Source) \\ at weblogic.jndi.internal.WLContextImpl.lookup(_WLContextImpl.java:392_) \\ at weblogic.jndi.internal.WLContextImpl.lookup(_WLContextImpl.java:381_) \\ at javax.naming.InitialContext.lookup(_InitialContext.java:351_) \\ at test.main(_test.java:26_) \\ Caused by: java.lang.ArrayIndexOutOfBoundsException: 6 \\ at weblogic.jdbc.common.internal.RmiDataSource_1030_WLStub.ensureInitialized(Unknown Source) \\ at weblogic.jdbc.common.internal.RmiDataSource_1030_WLStub.<init>(Unknown Source) \\ at sun.reflect.NativeConstructorAccessorImpl.newInstance0(_Native Method_) \\ at sun.reflect.NativeConstructorAccessorImpl.newInstance(_NativeConstructorAccessorImpl.java:39_) \\ at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(_DelegatingConstructorAccessorImpl.java:27_) \\ at java.lang.reflect.Constructor.newInstance(_Constructor.java:494_) \\ at weblogic.rmi.internal.StubGenerator.generateStub(_StubGenerator.java:788_) \\ at weblogic.rmi.internal.StubGenerator.generateStub(_StubGenerator.java:779_) \\ at weblogic.rmi.extensions.StubFactory.getStub(_StubFactory.java:74_) \\ at weblogic.rmi.internal.StubInfo.resolveObject(_StubInfo.java:213_) \\ at weblogic.rmi.internal.StubInfo.readResolve(_StubInfo.java:207_) \\ at sun.reflect.NativeMethodAccessorImpl.invoke0(_Native Method_) \\ at sun.reflect.NativeMethodAccessorImpl.invoke(_NativeMethodAccessorImpl.java:39_) \\ at sun.reflect.DelegatingMethodAccessorImpl.invoke(_DelegatingMethodAccessorImpl.java:25_) \\ at java.lang.reflect.Method.invoke(_Method.java:585_) \\ at java.io.ObjectStreamClass.invokeReadResolve(_ObjectStreamClass.java:1033_) \\ at java.io.ObjectInputStream.readOrdinaryObject(_ObjectInputStream.java:1728_) \\ at java.io.ObjectInputStream.readObject0(_ObjectInputStream.java:1305_) \\ at java.io.ObjectInputStream.readObject(_ObjectInputStream.java:348_) \\ at weblogic.utils.io.ChunkedObjectInputStream.readObject(_ChunkedObjectInputStream.java:197_) \\ at weblogic.rjvm.MsgAbbrevInputStream.readObject(_MsgAbbrevInputStream.java:564_) \\ at weblogic.utils.io.ChunkedObjectInputStream.readObject(_ChunkedObjectInputStream.java:193_) \\ at weblogic.rmi.internal.ObjectIO.readObject(_ObjectIO.java:62_) \\ at weblogic.rjvm.ResponseImpl.unmarshalReturn(_ResponseImpl.java:240_) \\ at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(_ClusterableRemoteRef.java:348_) \\ at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(_ClusterableRemoteRef.java:259_) \\ at weblogic.jndi.internal.ServerNamingNode_1030_WLStub.lookup(Unknown Source) \\ at weblogic.jndi.internal.WLContextImpl.lookup(_WLContextImpl.java:392_) \\ at 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But at the same time the output when connected to WLS 10.0 is :
Get DMQ \\Get dataSource \\Get dataSource1 \\Done
(so that the test passed)
Could you give me a piece of advice ?
Thanks,
SergeyI hit the same problem as yours. This issue is caused by JDK version. The JDK used by Weblogic 10.3 is java 6, while your client program's jdk version is java5. So change the both of them to java 6. This issue will be fixed.
Don't forget to rebuild the wlfullclient.jar which also should be java 6.
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SAPBI data accessing from Business objects and other OLAP tools
Hi,
We already have heavy usage of Business Object, Essbase and are planning to implement SAPBI 7.0
a) We are planning to connect our existing Business
Objects infrastructure onto the new SAPBI platform, Did
You experience any issues such as performance,
config issues, delays, web issues.. is there any
document or link with steps involved in integrating
Business objects and SAPBI
b) Can Bex analyzer gives simliar functionalities that
are in Essabse front- end (EXCEL), I know that the
backend data managament is quite different, but my
question is around user interface, do you have any
comparisons between these two tools.
c) Is it possible to get data from SAPBI using external
reporting tools (OLAP) such as Oracle Discoverer ...
Regards,
Ramanif the export to XML file is successful, the file will not be deleted if you are creating it from Metadata Exchange.
The file gets deleted in case you are using the create universe option and by default the file is created in %LINK_DIR%\log\MetadataExchange, you will also see ME_errorlog.txt and ME_outputlog.txt if there are any errors, do you see and erros in these files if you are creating the Universe directly from DS Designer ?
to use Metadata Exchange do the following
Open Data Services Desginer
Click on tools Menu -> Metadata Exchange
In the Metadata Exchange window
Select Export Data Services metadata to a file
Select DI CWM as metadata format
enter location for xml file (C:\temp)
Select the datastore you want to create Universe for
Click OK
Check for file named repo_export.xml in the C:\temp folder or the folder that you specified
Open Universe Builder and Select
Data Integrator bridge
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how to POST data to Web servers in Java
nullhi there,
U can copy that data into a excell file in a fixed format. After that using SQL*Loader u can import that data into oracle database.
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Cheers
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Not able to access SOAP web service data control from adf mobile
Hi,
I am trying to call web services from adf mobile..
I have created data control from external web service and it is perfectlly working on web browser..
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Is there any .jar file missing in adf mobile so that it is not supporting a web service?
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Hi,
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http://edocs.bea.com/aldsp/docs25/appdev/ejbclt.html#wp1090900
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MyDSPProject-ld-client.jar (built with Ant script using XmlBeans 2.0)
wlsdo.jar (from ALDSP 2.5)
xbean.jar
xqrl.jar
wlxbean.jar
ld-client.jar (from ALDSP 2.5)
I do the update in the way shown in attached java file.
After submit method call, I've got two copies of a new item added in the DB and also an exception that is shown in attached log-file.
What is the possible cause of this issue?
I use MySQL DBMS version 5.0.45.
I've also tried MS SQL 2005 but it simply had the same results.
DSP audit log is also attached.
Thank you in advance!
Best Regards,
Vitalii TiutiunnykThe problem is that your client is WLS server, and WLS server has network class loading disable (for security), and the result from the call requires a class that is not on the client. The call succeeds, but the the network class load for the result fails, and the WLS 9.2 framework (incorrectly) retries the call (and you get either a duplicate key exception or a second row inserted). Putting the server jar in the client classpath solves the problem.
If you wanted more information or help, you can contact BEA Customer Support and tell them it is regarding the CR I mentioned. -
MS Access Date problem (from Java program)
I have written an app. in Java that reads & writes data from a MS Access database.
I am trying to write an insert class which will add a row of data to one of my database tables - which contains Date fields.
My problem is that I can update the text fields, but not Date fields - every time I try my program throws an exception:
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Syntax error in INSERT INTO statement
My simplified code reads as:
try {
Statement insertStatement = databaseConnection.createStatement();
String query = "INSERT INTO myTable(jobId, employeeId, date) VALUES('11', '1', " + "'13/11/2006'" + ");";
insertStatement.execute(query);
} //close, etc. etc.
If I remove the date info from the query, the program executes successfully. I appreciate my problem might be related to the formatting of the date in Access, and if not a 'proper' Java question I give my apologies.
I have attempted several formats of the date with no success or variation in the exception.
I am, however, completely stuck and would appreciate any and all help given.
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My code is as follows:
PreparedStatement pstmt = null;
try {
String query = "INSERT INTO myTable (jobId, employeeId, date) VALUES(?, ?, ?);";
pstmt = databaseConnection.prepareStatement(query);
pstmt.setString(1, "11");
pstmt.setString(2, "1");
java.sql.Date sqlDate = getCurrentJavaSqlDate();
pstmt.setDate(3, sqlDate);
// execute query, and return number of rows created
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catch, etc. etc.
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Accessing External Url using Http Utility | Error when using from Weblogic on Solaris
We are using Http Utility (http://jakarta.apache.org/commons/httpclient/) from
Apache for accessing external URL. A XML string is sent as POST parameter to the
URL and the response is also an XML string. The URL is accessed over HTTPS protocol.
I am setting the following parameters in the java class:
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
// set the property
System.setProperty("java.protocol.handler.pkgs","com.sun.net.ssl.internal.www.protocol");
The java class written to access the external URL using Http Utility works perfectly
fine when it is run from either the command line (of Windows or Solaris using
main() ) or from weblogic on windows. The same java class throws an exception
when run from Solaris instance of Weblogic
2003-09-30 11:02:12,411 FATAL [com.bp.beyondbp.presentation.userregistration.action.LloydsValidator]
EXCEPTION: com.bp.beyondbp.presentation.userregistration.exception.LlyodsValidationFailedException,
MESSAGE: Write Channel Closed, possible SSL handshaking or trust failure;
CAUSE: (java.io.IOException: Write Channel Closed, possible SSL handshaking or
trust failure)
at com.bp.beyondbp.presentation.userregistration.action.LloydsValidator.postXMLtoLloyd(LloydsValidator.java:243)
at com.bp.beyondbp.presentation.userregistration.action.LloydsValidator.validateLlyodsForNewUser(LloydsValidator.java:95)
at com.bp.beyondbp.presentation.userregistration.action.PreferencesActionForm.validate(PreferencesActionForm.java:326)
at org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:942)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1058)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:401)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:306)
java.io.IOException: Write Channel Closed, possible SSL handshaking or trust failure
at com.certicom.tls.record.WriteHandler.write(Unknown Source)
at com.certicom.tls.interfaceimpl.TLSConnectionImpl.fireAlertSent(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.fireAlert(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.fireAlert(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.handleHandshakeMessage(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.handleHandshakeMessages(Unknown
Source)
at com.certicom.tls.record.ReadHandler.interpretContent(Unknown Source)
at com.certicom.tls.record.ReadHandler.readRecord(Unknown Source)
at com.certicom.tls.record.ReadHandler.readUntilHandshakeComplete(Unknown
Source)
at com.certicom.tls.interfaceimpl.TLSConnectionImpl.completeHandshake(Unknown
Source)
at com.certicom.tls.record.WriteHandler.write(Unknown Source)
at org.apache.commons.httpclient.HttpConnection$WrappedOutputStream.write(HttpConnection.java:1344)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:67)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:125)
at org.apache.commons.httpclient.HttpConnection.flushRequestOutputStream(HttpConnection.java:779)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2179)
at org.apache.commons.httpclient.HttpMethodBase.processRequest(HttpMethodBase.java:2534)
I tried to debug the problem by looking at system properties on windows and solaris,
the difference that I found was
On Windows
[exec] tModelInstanceInfo_description : com.sun.net.ssl.internal.www.protocol
On Solaris
[exec] tModelInstanceInfo_description : weblogic.utils|weblogic.tils|weblogic.net|weblogic.management
After this I changed the startWLS.sh on Solaris and set
-Djava.protocol.handler.pkgs=com.sun.net.ssl.internal.www.protocol in java options.
On looking the system properties again, the output was
[exec] tModelInstanceInfo_description : com.sun.net.ssl.internal.www.protocol|weblogic.utils|weblogic.utils|weblogic.net|weblogic.management
But still the error is same. Can somebody help me out here as to what is going
wrong? Please find the java class attached for reference, please have a look at
postXMLtoLloyd() method in the class file..
[LloydsValidator.java]We are using Http Utility (http://jakarta.apache.org/commons/httpclient/) from
Apache for accessing external URL. A XML string is sent as POST parameter to the
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I am setting the following parameters in the java class:
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
// set the property
System.setProperty("java.protocol.handler.pkgs","com.sun.net.ssl.internal.www.protocol");
The java class written to access the external URL using Http Utility works perfectly
fine when it is run from either the command line (of Windows or Solaris using
main() ) or from weblogic on windows. The same java class throws an exception
when run from Solaris instance of Weblogic
2003-09-30 11:02:12,411 FATAL [com.bp.beyondbp.presentation.userregistration.action.LloydsValidator]
EXCEPTION: com.bp.beyondbp.presentation.userregistration.exception.LlyodsValidationFailedException,
MESSAGE: Write Channel Closed, possible SSL handshaking or trust failure;
CAUSE: (java.io.IOException: Write Channel Closed, possible SSL handshaking or
trust failure)
at com.bp.beyondbp.presentation.userregistration.action.LloydsValidator.postXMLtoLloyd(LloydsValidator.java:243)
at com.bp.beyondbp.presentation.userregistration.action.LloydsValidator.validateLlyodsForNewUser(LloydsValidator.java:95)
at com.bp.beyondbp.presentation.userregistration.action.PreferencesActionForm.validate(PreferencesActionForm.java:326)
at org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:942)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1058)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:401)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:306)
java.io.IOException: Write Channel Closed, possible SSL handshaking or trust failure
at com.certicom.tls.record.WriteHandler.write(Unknown Source)
at com.certicom.tls.interfaceimpl.TLSConnectionImpl.fireAlertSent(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.fireAlert(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.fireAlert(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.handleHandshakeMessage(Unknown
Source)
at com.certicom.tls.record.handshake.HandshakeHandler.handleHandshakeMessages(Unknown
Source)
at com.certicom.tls.record.ReadHandler.interpretContent(Unknown Source)
at com.certicom.tls.record.ReadHandler.readRecord(Unknown Source)
at com.certicom.tls.record.ReadHandler.readUntilHandshakeComplete(Unknown
Source)
at com.certicom.tls.interfaceimpl.TLSConnectionImpl.completeHandshake(Unknown
Source)
at com.certicom.tls.record.WriteHandler.write(Unknown Source)
at org.apache.commons.httpclient.HttpConnection$WrappedOutputStream.write(HttpConnection.java:1344)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:67)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:125)
at org.apache.commons.httpclient.HttpConnection.flushRequestOutputStream(HttpConnection.java:779)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2179)
at org.apache.commons.httpclient.HttpMethodBase.processRequest(HttpMethodBase.java:2534)
I tried to debug the problem by looking at system properties on windows and solaris,
the difference that I found was
On Windows
[exec] tModelInstanceInfo_description : com.sun.net.ssl.internal.www.protocol
On Solaris
[exec] tModelInstanceInfo_description : weblogic.utils|weblogic.tils|weblogic.net|weblogic.management
After this I changed the startWLS.sh on Solaris and set
-Djava.protocol.handler.pkgs=com.sun.net.ssl.internal.www.protocol in java options.
On looking the system properties again, the output was
[exec] tModelInstanceInfo_description : com.sun.net.ssl.internal.www.protocol|weblogic.utils|weblogic.utils|weblogic.net|weblogic.management
But still the error is same. Can somebody help me out here as to what is going
wrong? Please find the java class attached for reference, please have a look at
postXMLtoLloyd() method in the class file..
[LloydsValidator.java] -
Urgent: how to really seperate business logic class from data access class
Hello,
I've this problem here on my hand and i really need help urgently. so please allow me to thank anyone who replies to this thread =)
Before i go any futhur, let me present a scenario. this will help make my question clearer.
"A user choose to view his account information"
here, i've attempted to do the following. i've tried to seperate my application into 3 layers, the GUI layer, the business logic layer, and the data access layer.
classically, the GUI layer only knows which object it should invoke, for example in the case above, the GUI would instantiate an Account object and prob the displayAcctInfo method of the Account object.
here is how my Account class looks like:
public class Account
private acctNo;
private userid;
private password;
private Customer acctOwner;
the way this class is being modelled is that there is a handle to a customer object.
that being the case, when i want to retrieve back account information, how do i go about retrieveing the information on the customer? should my data access class have knowledge on how the customer is being programmed? ie setName, getName, setAge, getAge all these methods etc? if not, how do i restore the state of the Customer object nested inside?
is there a better way to archieve the solution to my problem above? i would appriciate it for any help rendered =)
Yours sincerely,
Javierpublic class AccountThat looks like a business layer object to me.
In a large application the GUI probably shouldn't ever touch business objects. It makes requests to the business layer for specific information. For example you might have a class called CustomerAccountSummary - the data for that might come entirely from the Account object or it might come from Account and Customer.
When the GUI requests information it receives it as a 'primitive' - which is a class that has no behaviour (methods), just data. This keeps the interface between the GUI and business layer simple and makes it easier to maintain.
When using a primitive there are four operations: query, create, update and delete.
For a query the gui sets only the attributes in the primitive that will be specifically queried for (or a specialized primitive can be created for this.) The result of a query is either a single primitive or a collection of primitives. Each primitive will have all the attributes defined.
For a create all of the attributes are set. The gui calls a method and passes the primtive.
For an update, usually all fields are defined although this can vary. The gui calls a method and passes the primitive.
For a delete, only the 'key' fields are set (more can be but they are not used.) The gui calls a method and passes the primitive.
Also keep in mind that a clean seperation is always an idealization. For example verify that duplicate records are not created is a business logic requirement (the database doesn't care.) However, it is much easier and more efficient to handle that rule in the database rather than in the business layer. -
Hi,
I just want to load data only from MS Access tables to oracle tables.I already have oracle tables. Can i do this with Oracle Migration workbench.
ThanksHi,
The Oracle Migration Workbench can be used to migrate table data from your MS Access to your migrated Oracle database schema. The data can be transferred either online, using the Migration Wizard of the workbench or offline using SQL*Loader scripts generated by the workbench, to copy data from the source database to your destination Oracle database.
You mention that you already have the Oracle tables. Did you use the migration workbench to migrate your Access MDB file to Oracle?
If so, then you can do the following to load your data into the Oracle database using the offline capture method:
1. Use the Exporter for MS Access tool (omwb<version>.mde) to extract the data from your Access MDB file. This generates .DAT files containing the table data.
2. Launch the workbench, pointing to the repository containing the source and oracle model information for your Access MDB file. This will be the repository you used during the initial migration of your Access database to Oracle.
3. Select the Oracle Model tab, then select a user schema in the Oracle Model that you want to migrate the data to.
4. Select the associated "Tables" node of the tree.
5. From the "Objects" menu, select the "Generate SQL*Loader Scripts.
6. Use the generated SQL*Loader scripts to load the Access data, contained in the .DAT files generated in step 1 above, into the Oracle database.
For further information on the steps outlined above, please refer to Chapter 6 Migration the Database of the Oracle Migration Workbench User's Guide, specifically
section "Transferring the Data Offline". The User's Guide can be obtained in the /omwb/docs/usersguide folder of your omwb installation, or via the Help | User's Guide of the workbench.
I hope this helps.
Regards,
Hilary
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