URGENT (PLEASE HELP) AC Analysis Matrix Singular Error
Hi all (sorry to post on a new thread again Yao) , my project is due tomorrow at 9 am. Therefore please please please help me on this circuit.
I can't perfom AC analysis on the circuit for that there is a matrix singular error. May anyone please tell me what is wrong ??
Please! Thank you!!!
Attachments:
489project2.ms10 105 KB
OK, I added a current probe to measure the current thru the multimeter (You could also use a current - controlled voltage source) but no matter what I look at I can't get an ac analysis to give a non-zero gain. I simplified the circuit some more and set the option for the node numbers to show. There is something fundamentally wrong in the area of the ac voltage source V1 and the voltage controlled capacitor. As long as the voltage source is in parallel with the capacitor, the capacitor current will be driven only by the voltage source. The capacitor voltage will always be equal to the voltage source V1. The current source A4 doesn't accomplish anything - its current will just be sunk into the voltage source V1. I thought maybe you really meant to measure the voltage controlled capacitor current and feed that back into one of the inputs of A4 but I can't really tell what you are trying to accomplish. Maybe this will give you some ideas.
Attachments:
489project2r1.ms10 82 KB
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panic(cpu 0 caller 0xffffff80002c4794): Kernel trap at 0xffffff7f81757965, type 14=page fault, registers:
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0xffffff80b0dbb8a0 : 0xffffff7f81779632
0xffffff80b0dbb8d0 : 0xffffff7f8177d7d5
0xffffff80b0dbb900 : 0xffffff7f8177c6db
0xffffff80b0dbb9e0 : 0xffffff7f817412b8
0xffffff80b0dbba10 : 0xffffff7f81778684
0xffffff80b0dbba30 : 0xffffff7f817449ce
0xffffff80b0dbbb60 : 0xffffff7f81741a4c
0xffffff80b0dbbbc0 : 0xffffff8000655f3e
0xffffff80b0dbbbe0 : 0xffffff800065681a
0xffffff80b0dbbc40 : 0xffffff8000656fbb
0xffffff80b0dbbd80 : 0xffffff80002a3f08
0xffffff80b0dbbe80 : 0xffffff8000223096
0xffffff80b0dbbeb0 : 0xffffff80002148a9
0xffffff80b0dbbf10 : 0xffffff800021bbd8
0xffffff80b0dbbf70 : 0xffffff80002aef10
0xffffff80b0dbbfb0 : 0xffffff80002daec3
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at com.evermind.server.administration.ServerApplicationInstallation.finish(ServerApplic
ationInstallation.java:491)
at java.lang.reflect.Method.invoke(Native Method)
at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:80)
at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:64)
Any idea on what's the cause of this. It seems that the Oracle 9i's support of MDB differs significantly from R1. The demo sample that works for R1 no longer work for R2. For example, the following DD doesn't seem to work with R2.
<resource-ref>
<res-ref-name>jms/Queue/senderQueueConnectionFactory</res-ref-name>
<res-type>javax.jms.QueueConnectionFactory</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
<resource-env-ref>
<resource-env-ref-name>jms/Queue/senderQueue</resource-env-ref-name>
<resource-env-ref-type>javax.jms.Queue</resource-env-ref-type>
</resource-env-ref>
<resource-ref>
<res-ref-name>jms/Topic/senderTopicConnectionFactory</res-ref-name>
<res-type>javax.jms.TopicConnectionFactory</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
Please help!! This is very urgent! Thanks in advance!<jms-destination_type> tag should be <destination-type> its a oracle error
-
R2_AQ_JMS deployment Error--Urgent, please help!!
Deploy a simple MDB to Oracle9iASR2, follow the steps:
1. Define the MDB in ejb-jar.xml
<message-driven>
<description>MDB Queue Listener</description>
<display-name>QueueListener Message Driven Bean</display-name>
<ejb-name>QueueListenerMDB</ejb-name>
<ejb-class>mdb.QueueListenerMDB</ejb-class>
<transaction-type>Container</transaction-type>
<message-driven-destination>
<jms-destination-type>javax.jms.Topic</jms-destination-type>
</message-driven-destination>
</message-driven>
2. Modify the orion-ejb-jar.xml
<message-driven-deployment
name="QueueListenerMDB"
destination-location="jms/SalesTopic"
connection-factory-location="jms/theTopicConnectionFactory"
subscription-name="MDBSUB"
>
</message-driven-deployment>
3. define the resource-provider in application.xml
<resource-provider class="oracle.jms.OjmsContext" name="SalesJMS">
<description> OJMS/AQ </description>
<property name="url" value="jdbc:oracle:thin:@dell2400:1521:mydb"></property>
<property name="username" value="user"></property>
<property name="password" value="pssword"></property>
</resource-provider>
4. Deploy the ear file and got the following error:
java.lang.NullPointerException
at com.evermind.server.ejb.MessageDrivenHome.<init>(MessageDrivenHome.java:280)
at com.evermind.server.ejb.EJBPackageDeployment.bindHomes(EJBPackageDeployment.java:239
at com.evermind.server.ejb.EJBContainer.postInit(EJBContainer.java:589)
at com.evermind.server.Application.postInit(Application.java:420)
at com.evermind.server.administration.ServerApplicationInstallation.finish(ServerApplic
ationInstallation.java:491)
at java.lang.reflect.Method.invoke(Native Method)
at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:80)
at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:64)
Any idea on what's the cause of this. It seems that the Oracle 9i's support of MDB differs significantly from R1. The demo sample that works for R1 no longer work for R2. For example, the following DD doesn't seem to work with R2.
<resource-ref>
<res-ref-name>jms/Queue/senderQueueConnectionFactory</res-ref-name>
<res-type>javax.jms.QueueConnectionFactory</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
<resource-env-ref>
<resource-env-ref-name>jms/Queue/senderQueue</resource-env-ref-name>
<resource-env-ref-type>javax.jms.Queue</resource-env-ref-type>
</resource-env-ref>
<resource-ref>
<res-ref-name>jms/Topic/senderTopicConnectionFactory</res-ref-name>
<res-type>javax.jms.TopicConnectionFactory</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
Please help!! This is very urgent! Thanks in advance!Chunming -- There was a change from v1022x to v902. This was required per the changes in the EJB specification as it was finalized. The tag <jms-destination-type> was changed to <destination-type>. If you make this change in your ejb-jar.xml that should work.
Thanks -- Jeff -
Dear experts,
I have a problem while I load data from one ODS object into another one. I have some keyfigs which when loaded into the ODS are ok. (I mean the new data is ok) but the moment I activate the request, the keyfigures are turned automatically to zero. This peculiar performance is not observed in any of our development and certification systems. Another thing, is that the data load is an initial load and there exists nothing in the change log table as well before the load.
Any thoughts are highly appreciated. Any SAP notes on this issue??? Please help... urgent...
Kind Regards,
ShravanHello Prasad/Rohini,
Thanks for helping me. Yes, I checked the update rules and they are ok. The problem is not with the update rules, I guess. I delete the data first in ODS 1 and from ODS2 I load the data into ODS1. The data load is an init update. After loading the data, before activating the request, The new data is all ok. The key figure data is all as that is guided by the corresponding update rules. The moment I activate the request, the active data is all wrong. My Question is why the table containing new data is correct and after not after activating???
Since it is an initial update, I do not think change log should come into picture???
Any ideas???
Kind Regards,
Shravan -
Urgent Please help: Error Testing EJB in Universal Test Client
Hi,
I have to get this working by tommrow guys - can you please help.
I wonder if someone can assist. I am new to WSAD 5.1 and am trying to test an EJB I have created with both local and remote interfaces.
The bean has been created OK and ithe stub files have created for the bean via Generate->Deploy and RMIC code.
The RJB project has been defind in my WAS server correctly. The JNDI name in the EJB is \ejb\MyEJBHome
I start the Universal Test client (UTC) via the options on my WAS Server and then click on the JNDI explorer icon option and see my local EJB Folder and an ejb folder (plus others). If I go to the local EJB folder the stub for my local home inteface appears , I am able to click on it and consumme the bean.
However if I go to the ejb folder I see my home stub for the remote inteface , I do indded need to click on this to get at the remote inteface for my bean. However on clicking it I get a WAS error "null reference found".
It does not appear to be able to get at the MyBeanHome stub (no reference to it).
Ok what am I doing wrong! The project build with no errors and I can see all the stubs in the ejbModule folder. Now is the UTC expecting these stubs to be sitting in a particular directory? if so where?Hi Problem is with
public class MyEJBBean extends AbstractStatelessSessionBean {
private javax.ejb.SessionContext mySessionCtx;
extends AbstractStatelessSessionBean causes a problem in UTC.
Regards.
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