Coherence and EclipseLink - JTA Transaction Manager - slow response times

A colleague and I are updating a transactional web service to use Coherence as an underlying L2 cache. The application has the following characteristics:
Java 1.7
Using Spring Framework 4.0.5
EclipseLink 12.1.2
TopLink grid 12.1.2
Coherence 12.1.2
javax.persistence 12.1.2
The application is split, with a GAR in a WebLogic environment and the actual web service application deployed into IBM WebSphere 8.5.
When we execute a GET from the server for a decently sized piece of data, the response time is roughly 20-25 seconds. From looking into DynaTrace, it appears that we're hitting a brick wall at the "calculateChanges" method within EclipseLink. Looking further, we appear to be having issues with the transaction manager but we're not sure what. If we have a local resource transaction manager, the response time is roughly 500 milliseconds for the exact same request. When the JTA transaction manager is involved, it's 20-25 seconds.
Is there a recommendation on how to configure the transaction manager when incorporating Coherence into a web service application of this type?

Hi Volker/Markus,
Thanks a lot for the response.
Yeah Volker, you are absolutely right. the 10-12 seconds happens when we have not used the transaction for several minutes...Looks like the transactions are moved away from the SAP buffer or something, in a very short time.
and yes, the ABAP WP's are running in Pool 2 (*BASE) and the the JAVA server, I have set up in another memory pool of 7 GB's.
I would say the performance of the JAVA part is much better than the ABAP part.
Should I just remove the ABAP part of the SOLMAN from memory pool 2 and assign the JAVA/ABAP a separate huge memory pool of say like 12-13 GB's.
Will that likely to improve my performance??
No, I have not deactivated RSDB_TDB in TCOLL from daily twice to weekly once on all systems on this box. It is running daily twice right now.
Should I change it to weekly once on all the systems on this box? How is that going to help me?? The only thinng I can think of is that it will save me some CPU utilization, as considerable CPU resources are needed for this program to run.
But my CPU utilization is anyway only like 30 % average. Its a i570 hardware and right now running 5 CPU's.
So you still think I should deactivate this job from daily twice to weekly once on all systems on this box??
Markus, Did you open up any messages with SAP on this issue.?
I remember working on the 3.2 version of soultion manager on change management and the response times very much better than this as compared to 4.0.
Let me know guys and once again..thanks a lot for your help and valuable input.
Abhi

Similar Messages

T400s and T500 experiencing slow response time accessing certain websites from within our network

Hello there.... we have some Lenovo T400s running Windows 7 and T500 running WinXP Pro that are experiencing slow response time when trying to access certain website from within our company network (particularly this global crossing Web meeting, google maps): https://core1.callinfo.com/interface/guest.jsp?host=globalcrossing ... it takes 10-15 minutes before it loads the meeting login screen and same response time for google maps to respond as well... the thing is, other Lenovo T400s, T61, and other HP desktop machines that are connected to the same network in our company does not experience this slow response time... HOWEVER, when these problematic T400s / T500 laptops are connected to external network (e.g. home DSL, hotel DSL/Cable modem) the problem goes away. Our NETWORK ran tests to monitor traffic to the websites from our company's network but seem to connect just fine... just wondering if anybody out there experienced the same problem and know of a solution. By the way, the two newer T400s that are experiencing the slow response time have the following BIOS version 1.11 (6HET26WW) and BIOS version 1.09 (6HET24WW). Then a T400s that is also connected to the same network but not experiencing the problem has a BIOS version of 1.02 (6HET17WW - running WinXP Pro). NOTE: We also connected a Linksys USB wireless adapter to connect to our wireless network in the company but same problem - and problem occurs even when connected via network cable. Your feedback will be greatly appreciated.

Network World posted an article about a free response time monitoring tool that would be worth checking out

Coherence and XTP(Extreme Transaction Processing)

There are many articles and reports about Coherence and XTP(Extreme Transaction Processing), however I think in many cases Coherence can improve performance for query operation not for write operation dramatically, because there are many restricts for cache persistence through Coherence, for example global transaction, XA datasource, transaction spans among many caches. So I think there is a long way to go if Coherence wants to implement real XTP, am I right, any comments?

any comments?

EJB slow response time in cluster

We have 2 clusters : cluster 1(3 managed servers) and cluster2( 2 managed servers). We have an EJB deployed on cluster2 which is being called by an application on cluster1. Issue is that this EJB gives a very slow response time (in the order of minutes). There are no errors or exceptions in the logs.
When we shut down one of the nodes on cluster2, the respose from the same EJB is very fast. Please help as to where we should look out for the issue?

Could be that you have a network configuration problem. The source of the problem is how host names and IP addresses are resolved,
and there is a workaround. RMI and other naming services use the InetAddress class to obtain resolved host names and IP addresses.
InetAddress caches lookup results to improve subsequent calls, but when it is passed a new IP address or host name, it performs a
cross-reference between the IP address and the host name to prevent address spoofing. If you supply the host name as an IP address,
InetAddress still tries to verify the name of the host. To workaround this problem, include the host name and IP address in the
hosts file on the client, for example,
127.0.0.1           localhost
172.30.0.129      SomeWebLogicServerHostName
172.30.0.130      SomeOtherWebLogicServerHostName

Slow response time, applications won't load, etc.

I'm writing this on behalf of my sister, who is on a MacBook Pro, operating Mac OS 10.4.8.
Just yesterday, she began to notice extremely slow response time on her laptop, with applications taking up to 5 minutes to load sometimes, and the Internet subsequently taking ages to switch from page to page. The laptop is also constantly freezing up, with the spinning circle showing up frequently, as well as complete system freezes on and off.
I went on the computer and repaired disk permissions, as well as verified the disk. All went fine. Tried to do a software update in order to update to 10.4.9, but the computer freezes before it can even really begin to download the information.
Numerous reboots were also tried, with nothing working. I don't want to have to do something extreme like reinstalling the operating system without knowing that there might be a simpler solution, so that's why I'm here! I'd also like to know whether we can save her files (documents, etc.), if a reinstallation is needed.
Edit: She reports that she did install or download any software or file attachments, and keeps insisting that the problem virtually came out of nowhere, in case this helps!
Thanks!
MacBook Pro Mac OS X (10.4.9)

Alright-her computer has gotten progressively worse, and has not even managed to reach the log in screen for the past 10 minutes. Just a grey screen, an apple, and the little twirling loading thing.
Am at a loss as to what to do...last night, I could log in, but it was still hanging and taking just about forever for it to do anything.
Is a reformat the only thing left to do? She does subscribe to AppleCare-is it worth calling them, or will they just tell her to reformat as well?
Edit: I'm beginning to think this might date back to a lightning storm we had a couple days ago-does this sort of behaviour seem to follow the behaviour or something that experienced an electrical surge? Her phone in the room was acting funny as well for a few days.

Slow response times

This last weekend, we migrated off of our old server 2003 cf7mx server, to a new Server 2008r2 x64 CF 9,0,1,274733 server. We are now experiencing slow response times for our server,according to the Windows Performance monitor our Avg Request times are way up. I have been going through some logs but nothing seems to leap out at me, but i am not the best CF admin. As i dont know what information would be usefull, i have tried to give all the info.
Here is our coldfusion-event log:
08/14 16:22:58 user JSPServlet: init
08/14 16:23:00 user ColdFusionStartUpServlet: init
08/14 16:23:00 user ColdFusionStartUpServlet: ColdFusion: Starting application services
08/14 16:23:00 user ColdFusionStartUpServlet: ColdFusion: VM version = 14.3-b01
08/14 16:23:08 user ColdFusionStartUpServlet: ColdFusion: application services are now available
08/14 16:23:08 user CFMxmlServlet: init
08/14 16:23:08 user CFMxmlServlet: Macromedia Flex Build: 87315.134646
08/14 16:23:10 user CFSwfServlet: init
08/14 16:23:10 user CFCServlet: init
08/14 16:23:12 user FlashGateway: init
08/14 16:23:12 user MessageBrokerServlet: init
08/14 16:23:13 user CFFormGateway: init
08/14 16:23:13 user CFInternalServlet: init
08/14 16:23:13 user WSRPProducer: init
08/14 16:23:13 user ServerCFCServlet: init
08/15 08:13:09 user GraphServlet: init
08/15 10:25:45 user CFInternalServlet: destroy
08/15 10:25:50 user FlashGateway: destroy
08/15 10:25:50 user WSRPProducer: destroy
08/15 10:25:50 user CFCServlet: destroy
08/15 10:25:50 user GraphServlet: destroy
08/15 10:25:50 user CFMxmlServlet: destroy
08/15 10:25:50 user CFFormGateway: destroy
08/15 10:25:50 user CFSwfServlet: destroy
08/15 10:26:50 info No JDBC data sources have been configured for this server (see jrun-resources.xml)
08/15 10:26:50 info JRun Proxy Server listening on *:51800
08/15 10:26:50 info Deploying enterprise application "Adobe_ColdFusion_9" from: file:/C:/ColdFusion9/
08/15 10:26:51 info Deploying web application "Adobe ColdFusion 9" from: file:/C:/ColdFusion9/
08/15 10:26:52 user JSPServlet: init
08/15 10:26:53 user ColdFusionStartUpServlet: init
08/15 10:26:53 user ColdFusionStartUpServlet: ColdFusion: Starting application services
08/15 10:26:53 user ColdFusionStartUpServlet: ColdFusion: VM version = 14.3-b01
08/15 10:26:58 user ColdFusionStartUpServlet: ColdFusion: application services are now available
08/15 10:26:58 user CFMxmlServlet: init
08/15 10:26:58 user CFMxmlServlet: Macromedia Flex Build: 87315.134646
08/15 10:26:59 user CFSwfServlet: init
08/15 10:27:00 user CFCServlet: init
08/15 10:27:03 user FlashGateway: init
08/15 10:27:03 user MessageBrokerServlet: init
08/15 10:27:04 user CFFormGateway: init
08/15 10:27:04 user CFInternalServlet: init
08/15 10:27:04 user WSRPProducer: init
08/15 10:27:05 user ServerCFCServlet: init
08/15 10:36:30 user CFInternalServlet: destroy
08/15 10:36:36 user FlashGateway: destroy
08/15 10:36:36 user WSRPProducer: destroy
08/15 10:36:36 user CFCServlet: destroy
08/15 10:36:36 user CFMxmlServlet: destroy
08/15 10:36:36 user CFFormGateway: destroy
08/15 10:36:36 user CFSwfServlet: destroy
08/15 10:38:35 info No JDBC data sources have been configured for this server (see jrun-resources.xml)
08/15 10:38:35 info JRun Proxy Server listening on *:51800
08/15 10:38:35 info Deploying enterprise application "Adobe_ColdFusion_9" from: file:/C:/ColdFusion9/
08/15 10:38:35 info Deploying web application "Adobe ColdFusion 9" from: file:/C:/ColdFusion9/
08/15 10:38:36 user JSPServlet: init
08/15 10:38:37 user ColdFusionStartUpServlet: init
08/15 10:38:37 user ColdFusionStartUpServlet: ColdFusion: Starting application services
08/15 10:38:37 user ColdFusionStartUpServlet: ColdFusion: VM version = 14.3-b01
08/15 10:38:41 user ColdFusionStartUpServlet: ColdFusion: application services are now available
08/15 10:38:41 user CFMxmlServlet: init
08/15 10:38:41 user CFMxmlServlet: Macromedia Flex Build: 87315.134646
08/15 10:38:44 user CFSwfServlet: init
08/15 10:38:44 user CFCServlet: init
08/15 10:38:46 user FlashGateway: init
08/15 10:38:46 user MessageBrokerServlet: init
08/15 10:38:47 user CFFormGateway: init
08/15 10:38:47 user CFInternalServlet: init
08/15 10:38:47 user WSRPProducer: init
Here is our cf application log:
"Severity","ThreadID","Date","Time","Application","Message"
"Information","jrpp-0","06/25/11","19:24:19",,"C:\ColdFusion9\logs\application.log initialized"
"Error","jrpp-0","06/25/11","19:24:19",,"File not found: /CFIDE/main/ide.cfm The specific sequence of files included or processed is: C:\inetpub\wwwroot\CFIDE\main\ide.cfm'' "
"Error","jrpp-1","06/25/11","22:14:06",,"File not found: /CFIDE/main/ide.cfm The specific sequence of files included or processed is: C:\inetpub\wwwroot\CFIDE\main\ide.cfm'' "
"Error","jrpp-2","06/25/11","22:32:05",,"File not found: /CFIDE/main/ide.cfm The specific sequence of files included or processed is: C:\inetpub\wwwroot\CFIDE\main\ide.cfm'' "
"Information","jrpp-3","06/26/11","11:45:13","CFADMIN","Invalid login for Default User"
"Error","jrpp-0","07/06/11","15:46:07",,"File not found: /CFIDE/main/ide.cfm The specific sequence of files included or processed is: C:\inetpub\wwwroot\CFIDE\main\ide.cfm'' "
"Error","jrpp-1","08/14/11","20:56:25","impager","Element DEPT is undefined in FORM. The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\clinical\pagers\impager\sendpage.cfm, line: 1 "
"Error","jrpp-1","08/14/11","21:04:33",,"File not found: /CFIDE/main/ide.cfm The specific sequence of files included or processed is: C:\inetpub\wwwroot\CFIDE\main\ide.cfm'' "
"Error","jrpp-4","08/14/11","22:04:43","impager","Element DEPT is undefined in FORM. The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\clinical\pagers\impager\sendpage.cfm, line: 1 "
"Error","jrpp-36","08/15/11","08:50:29","TEAMS_database","Variable MYPERIOD is undefined. The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthly_entry.cfm, line: 220 "
"Error","jrpp-50","08/15/11","09:12:36",,"Invalid CFML construct found on line 2 at column 25.ColdFusion was looking at the following text:=The CFML compiler was processing:<ul><li>An expression that began on line 2, column 8. The expression might be missing an ending #, for example, #expr instead of #expr#.<li>A cfset tag beginning on line 2, column 2.</ul> The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\clinpub\L2\ess\page3e.cfm, line: 2 "
"Error","jrpp-50","08/15/11","09:13:39",,"Invalid CFML construct found on line 2 at column 25.ColdFusion was looking at the following text:=The CFML compiler was processing:<ul><li>An expression that began on line 2, column 8. The expression might be missing an ending #, for example, #expr instead of #expr#.<li>A cfset tag beginning on line 2, column 2.</ul> The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\clinpub\L2\ess\page3e.cfm, line: 2 "
"Error","jrpp-50","08/15/11","09:14:17",,"Invalid CFML construct found on line 42 at column 35.ColdFusion was looking at the following text:=The CFML compiler was processing:<ul><li>An expression that began on line 42, column 8. The expression might be missing an ending #, for example, #expr instead of #expr#.<li>A cfset tag beginning on line 42, column 2.</ul> The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\clinpub\L2\ess\page4a.cfm, line: 42 "
"Error","jrpp-78","08/15/11","09:56:53","TEAMS_database","Variable MYPERIOD is undefined. The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthly_entry.cfm, line: 220 "
"Error","jrpp-75","08/15/11","10:10:12","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 9 "
"Error","jrpp-80","08/15/11","10:10:46","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 9 "
"Error","jrpp-78","08/15/11","10:11:28","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 124 "
"Error","jrpp-89","08/15/11","10:13:20","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 418 "
"Error","jrpp-88","08/15/11","10:13:52","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\login.cfm, line: 77 "
"Error","jrpp-82","08/15/11","10:14:35","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 9 "
"Error","jrpp-92","08/15/11","10:16:25","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\login.cfm, line: 77 "
"Error","jrpp-84","08/15/11","10:18:11","impager","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\clinical\pagers\impager\pagerlist.cfm, line: 620 "
"Error","jrpp-89","08/15/11","10:19:37","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\entry_2011_1.cfm, line: 233 "
"Error","jrpp-80","08/15/11","10:22:19","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\entry_2011_1.cfm, line: 154 "
"Error","jrpp-92","08/15/11","10:23:24","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\login.cfm, line: 84 "
"Error","jrpp-96","08/15/11","10:24:12","TEAMS_database","The request has exceeded the allowable time limit Tag: cfoutput The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\entry_2011_2.cfm, line: 157 "
"Error","jrpp-95","08/15/11","10:24:12","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\entry_2011_1.cfm, line: 233 "
"Error","jrpp-14","08/15/11","10:31:03","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 9 "
"Error","jrpp-2","08/15/11","10:31:33","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\sow.cfm, line: 144 "
"Error","jrpp-15","08/15/11","10:32:04","TEAMS_database","Error Executing Database Query.Timed out trying to establish connection The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\TA_entry.cfm, line: 154 "
"Error","jrpp-1","08/15/11","10:32:15","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 124 "
"Error","jrpp-12","08/15/11","10:32:58","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\sow.cfm, line: 169 "
"Error","jrpp-10","08/15/11","10:33:21","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\monthlyentry1a.cfm, line: 418 "
"Error","jrpp-4","08/15/11","10:33:43","TEAMS_database","The request has exceeded the allowable time limit Tag: CFQUERY The specific sequence of files included or processed is: C:\inetpub\wwwroot\cf\tpep\teendata\entry_2011_2.cfm, line: 233 "
Please let me know if any other data would be usefull.

Hi,
I expect the error details in CF9\runtime\logs\coldfusion-out.log will like provide a clue as to problem.
For a more long term plan I think you should do what you can to migrate the ACCESS data to SQL or some other database.
HTH, Carl.

EJB3 Interceptors and JTA transaction management

Hi,
Are Interceptors part of the JTA transaction?
can we perform there rollback for example?
What if the EJB transaction setting is NONE?
Thanks in advance,
Tal.

user6098247 wrote:
Hi,
Are Interceptors part of the JTA transaction?Yes - the spec mandates that. Interceptor methods execute in the same security and transaction context as the associated bean method.
can we perform there rollback for example?
For CMT? It is possible to inject the ejbContext object into the Interceptor and use it in the same manner you would in a bean to mark the tx for rollback.
What if the EJB transaction setting is NONE?
Again the behavior is the same as in a bean.
ram.

SFSB and BMT JTA Transaction Scope confusion

Hi,
I'm a bit confused with the scope of a UserTransaction.
* Classic SFSB with BMT
@Stateful
@TransactionManagement(TransactionManagementType.BEAN)
public class SFSBean implements SFS {
     private @Resource UserTransaction tx;
     private @PersistenceUnit(unitName="my-db") EntityManagerFactory emf;
     private EntityManager em;
     public void start() {
          try {
               tx.begin();
          } catch (NotSupportedException e) {
               throw new RuntimeException(e);
          } catch (SystemException e) {
               throw new RuntimeException(e);
          em = emf.createEntityManager();
     public void doJob1() {
     public void doJob2() {
     @Remove
     public void commit() {
          try {
               tx.commit();
          } catch (SecurityException e) {
               throw new RuntimeException(e);
          } catch (IllegalStateException e) {
               throw new RuntimeException(e);
          } catch (RollbackException e) {
               throw new RuntimeException(e);
          } catch (HeuristicMixedException e) {
               throw new RuntimeException(e);
          } catch (HeuristicRollbackException e) {
               throw new RuntimeException(e);
          } catch (SystemException e) {
               throw new RuntimeException(e);
     @Remove
     public void rollback() {
          try {
               tx.rollback();
          } catch (IllegalStateException e) {
               e.printStackTrace();
          } catch (SecurityException e) {
               e.printStackTrace();
          } catch (SystemException e) {
               e.printStackTrace();
}When I request this SB the container inject a JTA transaction inside my variable tx and this transaction will be bound to the life of my SB.
But : if a handler for this SB is associated to a SessionScoped or ConversationScoped bean (CDI contexts) or simply to a HttpSession attribute, then calls to SB methods may occurs in different thread (successives requests).
Is this pattern supported? As JTA rely on ThreadLocal but a transaction can also be injected inside a SFSB: I'm a bit confused...
HttpRequest1[Thread-1] : ejbHandler.start(); // conversation start
HttpRequest2[Thread-2] : ejbHandler.doJob1(); // long running transaction
HttpRequest3[Thread-1] : ejbHandler.doJob2(); // long running transaction
HttpRequest4[Thread-3] : ejbHandler.commit(); // conversation end
I tried a small use case and it seems to work (maybe all my requests was part of the same thread, lucky me) with JBoss but if an error occurs the transaction manager seems completely confused.
If this pattern is legal (I know it is a very bad pattern...), I'll try to fix my code, if it isn't I'll have to drop JTA from this part of the code...
Thank you.

Yes, this is part of the required transactional behavior for a stateful session bean. A stateful session bean is the only session bean type whose bean instances can retain their association with a transaction after the business method returns. It's then the container's job to set up the correct transaction context for each successive invocation of the stateful session bean instance, until the transaction is committed or rolled back. If a system exception is thrown from the stateful session bean method the instance will be destroyed.

ClassNotFound Exception integrating Coherence and Eclipselink with composite key entity objects

I am hooking up coherence as an L2 cache for eclipselink in weblogic 12c (using the latest released weblogic and eclipselink 2.4.2.v20130514-5956486). I have my application war and coherence gar packaged in the same EAR file. For Entity Objects with single primary keys (Longs) coherence integration works as expected. However I have several multi-part key Entity Objects that use an IdClass to represent the key. When these objects get serialized, coherence throws a class not found exception. I'm assuming its because the cachekey used is an instance of my applications IdClass, and the weblogic classloader doesn't have access to this. Since eclipselink hides the cache integration with coherence, I cannot pass my classloader off to coherence (as i do with other caches i'm using directly with coherence).
How can I get around this problem?
I saw this option in ExternalizableHelper.xml, but modifying it directly had no effect:


<force-classloader-resolving>false</force-classloader-resolving>
Here is the stack trace:
ClassLoader: null) java.io.IOException: readObject failed: java.lang.ClassNotFoundException: com.oracle.pgbu.common.data.OverlayIdClass
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:623)
at weblogic.coherence.service.internal.io.WLSObjectInputStream.resolveClass(WLSObjectInputStream.java:45)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1610)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1704)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1342)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at com.tangosol.util.ExternalizableHelper.readSerializable(ExternalizableHelper.java:2262)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2393)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2315)
at oracle.eclipselink.coherence.integrated.internal.cache.RelationshipUpdateProcessor.readExternal(RelationshipUpdateProcessor.java:82)
at com.tangosol.util.ExternalizableHelper.readExternalizableLite(ExternalizableHelper.java:2086)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2390)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at oracle.eclipselink.coherence.integrated.cache.WrapperSerializer.deserialize(WrapperSerializer.java:79)
at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2791)
at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:266)
ClassLoader: null
at com.tangosol.util.Base.ensureRuntimeException(Base.java:286)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.tagException(Grid.CDB:50)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onInvokeRequest(PartitionedCache.CDB:61)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$InvokeRequest.run(PartitionedCache.CDB:1)
at com.tangosol.coherence.component.util.DaemonPool.add(DaemonPool.CDB:20)
at com.tangosol.coherence.component.util.DaemonPool.add(DaemonPool.CDB:1)
at com.tangosol.coherence.component.net.message.requestMessage.DistributedCacheKeyRequest.onReceived(DistributedCacheKeyRequest.CDB:2)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onMessage(Grid.CDB:38)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onNotify(Grid.CDB:23)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService.onNotify(PartitionedService.CDB:3)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onNotify(PartitionedCache.CDB:3)
at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:51)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.io.IOException: readObject failed: java.lang.ClassNotFoundException: com.oracle.pgbu.common.data.OverlayIdClass
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:623)
at weblogic.coherence.service.internal.io.WLSObjectInputStream.resolveClass(WLSObjectInputStream.java:45)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1610)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1704)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1342)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at com.tangosol.util.ExternalizableHelper.readSerializable(ExternalizableHelper.java:2262)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2393)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2315)
at oracle.eclipselink.coherence.integrated.internal.cache.RelationshipUpdateProcessor.readExternal(RelationshipUpdateProcessor.java:82)
at com.tangosol.util.ExternalizableHelper.readExternalizableLite(ExternalizableHelper.java:2086)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2390)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at oracle.eclipselink.coherence.integrated.cache.WrapperSerializer.deserialize(WrapperSerializer.java:79)
at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2791)
at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:266)
ClassLoader: null
at com.tangosol.util.ExternalizableHelper.readSerializable(ExternalizableHelper.java:2270)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2393)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2315)
at oracle.eclipselink.coherence.integrated.internal.cache.RelationshipUpdateProcessor.readExternal(RelationshipUpdateProcessor.java:82)
at com.tangosol.util.ExternalizableHelper.readExternalizableLite(ExternalizableHelper.java:2086)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2390)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at oracle.eclipselink.coherence.integrated.cache.WrapperSerializer.deserialize(WrapperSerializer.java:79)
at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2791)
at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:266)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$InvokeRequest.deserializeProcessor(PartitionedCache.CDB:7)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onInvokeRequest(PartitionedCache.CDB:37)
... 10 more

I am hooking up coherence as an L2 cache for eclipselink in weblogic 12c (using the latest released weblogic and eclipselink 2.4.2.v20130514-5956486). I have my application war and coherence gar packaged in the same EAR file. For Entity Objects with single primary keys (Longs) coherence integration works as expected. However I have several multi-part key Entity Objects that use an IdClass to represent the key. When these objects get serialized, coherence throws a class not found exception. I'm assuming its because the cachekey used is an instance of my applications IdClass, and the weblogic classloader doesn't have access to this. Since eclipselink hides the cache integration with coherence, I cannot pass my classloader off to coherence (as i do with other caches i'm using directly with coherence).
How can I get around this problem?
I saw this option in ExternalizableHelper.xml, but modifying it directly had no effect:


<force-classloader-resolving>false</force-classloader-resolving>
Here is the stack trace:
ClassLoader: null) java.io.IOException: readObject failed: java.lang.ClassNotFoundException: com.oracle.pgbu.common.data.OverlayIdClass
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:623)
at weblogic.coherence.service.internal.io.WLSObjectInputStream.resolveClass(WLSObjectInputStream.java:45)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1610)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1704)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1342)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at com.tangosol.util.ExternalizableHelper.readSerializable(ExternalizableHelper.java:2262)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2393)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2315)
at oracle.eclipselink.coherence.integrated.internal.cache.RelationshipUpdateProcessor.readExternal(RelationshipUpdateProcessor.java:82)
at com.tangosol.util.ExternalizableHelper.readExternalizableLite(ExternalizableHelper.java:2086)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2390)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at oracle.eclipselink.coherence.integrated.cache.WrapperSerializer.deserialize(WrapperSerializer.java:79)
at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2791)
at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:266)
ClassLoader: null
at com.tangosol.util.Base.ensureRuntimeException(Base.java:286)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.tagException(Grid.CDB:50)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onInvokeRequest(PartitionedCache.CDB:61)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$InvokeRequest.run(PartitionedCache.CDB:1)
at com.tangosol.coherence.component.util.DaemonPool.add(DaemonPool.CDB:20)
at com.tangosol.coherence.component.util.DaemonPool.add(DaemonPool.CDB:1)
at com.tangosol.coherence.component.net.message.requestMessage.DistributedCacheKeyRequest.onReceived(DistributedCacheKeyRequest.CDB:2)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onMessage(Grid.CDB:38)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.onNotify(Grid.CDB:23)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.PartitionedService.onNotify(PartitionedService.CDB:3)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onNotify(PartitionedCache.CDB:3)
at com.tangosol.coherence.component.util.Daemon.run(Daemon.CDB:51)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.io.IOException: readObject failed: java.lang.ClassNotFoundException: com.oracle.pgbu.common.data.OverlayIdClass
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:623)
at weblogic.coherence.service.internal.io.WLSObjectInputStream.resolveClass(WLSObjectInputStream.java:45)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1610)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1348)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1704)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1342)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at com.tangosol.util.ExternalizableHelper.readSerializable(ExternalizableHelper.java:2262)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2393)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2315)
at oracle.eclipselink.coherence.integrated.internal.cache.RelationshipUpdateProcessor.readExternal(RelationshipUpdateProcessor.java:82)
at com.tangosol.util.ExternalizableHelper.readExternalizableLite(ExternalizableHelper.java:2086)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2390)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at oracle.eclipselink.coherence.integrated.cache.WrapperSerializer.deserialize(WrapperSerializer.java:79)
at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2791)
at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:266)
ClassLoader: null
at com.tangosol.util.ExternalizableHelper.readSerializable(ExternalizableHelper.java:2270)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2393)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2315)
at oracle.eclipselink.coherence.integrated.internal.cache.RelationshipUpdateProcessor.readExternal(RelationshipUpdateProcessor.java:82)
at com.tangosol.util.ExternalizableHelper.readExternalizableLite(ExternalizableHelper.java:2086)
at com.tangosol.util.ExternalizableHelper.readObjectInternal(ExternalizableHelper.java:2390)
at com.tangosol.util.ExternalizableHelper.readObject(ExternalizableHelper.java:2336)
at oracle.eclipselink.coherence.integrated.cache.WrapperSerializer.deserialize(WrapperSerializer.java:79)
at com.tangosol.util.ExternalizableHelper.deserializeInternal(ExternalizableHelper.java:2791)
at com.tangosol.util.ExternalizableHelper.fromBinary(ExternalizableHelper.java:266)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache$InvokeRequest.deserializeProcessor(PartitionedCache.CDB:7)
at com.tangosol.coherence.component.util.daemon.queueProcessor.service.grid.partitionedService.PartitionedCache.onInvokeRequest(PartitionedCache.CDB:37)
... 10 more

Slow response time and frequent lockups?

Why does my Adobe Premiere Elements 9 and Adobe Photoshop Elements 8 constantly lock up (not responding on Task Manager) and/or the response time to do anything is unacceptable (1 minute oe more to do a rename). I don't think my lap top is the issue is brand new with 6GB of RAM. I'm to Adobe Elements and Photoshop and so far I disappointed. Any ideas? Thanks!

It could be any number of things -- but you haven't given us enough information to be able to help you.
Are you running the 64-bit version of Windows 7? You may want to check out the 64-bit version of Windows 10. It runs like the wind on that OS!
New computers are usually full of outdated drivers, temp files and fragmentation.
Have you manually gone to Windows Update and downloaded all of the latest updates? Do you have the latest version of Quicktime, per the program's requirements?
When did you last clean and defragment your system? In my books, I recommend Advanced System Care from iobit. It cleans your temp files, tunes your registry and defragments with a single button. And it's free!
http://www.iobit.com/advancedsystemcareper.html
When does it lock up? When you first starting the program or when you're in the midst of editing? What is the source of the video you're editing when it locks?

Slow response time on query from one schema to another

I've got two separate databases (one test, the other production). The schemas are pretty much identical and contain the same data. This particular query is executed from .NET (SQL text command, not SP) and takes about 3 seconds when performed against my test db, but takes anywhere from 45 seconds to 5 minutes on the production system. I've exceuted the same statement using Aquadata studio and get the same response times. I didn't build the queries or the schemas, nor do I manage the database servers. But I am responsible for making this work now. These queries have been working in the past, but recently have been changed. I am able to speed this one up with some sql changes, but the others I'm not sure about. I've checked and production db has indexes on the fields I'm querying while the test db does not. I would expect test to be slower, but it's not. Any ideas that I could try. On Monday I'll ask our server admins to check out the server end of it, and see if they need to reboot or something. In the meantime, I'm going to work to revamp the SQL.
Any ideas you can provide would be much appreciated.
Sincerely,
Zam

when your query takes long...
When your query takes too long ...

Slow response time with terminal emulator

We are using Oracle Financials pkg. 10.7 Character mode using Oracle DB 7.3.3 on a IBM (sequent) S5000 running at DYNIX/ptx 4.2.3 (soon to be 4.2.4). On the end user side, the accounting dept. is connecting to the server using EXTRA Personal Client. During the course of the day, the response time of the emulator slows down. I can count to 25 sometimes b/4 the emulator responds (catches up with the key strokes). Some days it does not happen until the end of the work day and other times it can happen after just a few hours. After checking the network, application and server, we can find nothing wrong. If we have the user reboot their p.c., this seems to clear up the problem. Has anyone else seen or heard of this problem??? If so, does anyone know how to correct it??? We have installed and tried a different emulator that seems to be doing the samething, but only not as bad (slow).
Thanks,
Tony Dopkins
UNIX System Administrator
Andersen Windows

Never heard of this problem or this emulator product.
Oracle did/does have their own emulator that sort of similuates a GUI environment.
It is called OADM (Oracle Display Manager).
If you call support, they may be able to send it to you. However, it's no longer supported, and is a little buggy. But it has no performance problems.
If it straight character feel the users need, Kea TERM works 4 me.
Or, possibly call the your emulators support line.. it could be a known issue with their product..
Most likely it has nothing to do with Oracle products.

Slow response time Java 2 (Standard Edition) v1.4.2_13

Hello all, I'm a new user to Java and not a developer or a programmer, but I thought this forum might be the best place to start seeking answers to my questions.
The organization I work for uses a centralized web-based Oracle (v10g) accounting program to monitor it�s worldwide inventory. Our network has very strong firewalls and uses a lot of security software to insure network integrity. Users navigate to a portal website and login to their account where they post transactions and such. When users login and initiate a session we use Microsoft VM to create the virtual environment where we communicate with the accounting program. Microsoft VM works well in our environment and provides quick GUI response times (seconds) as transactions are posted.
Understanding the real possibility that Microsoft VM might go away in the not so distant future we tried using Java 2 (Standard Edition) v1.4.2_13 (build-B06) to create the virtual environment and connect to our accounts. The response time was incredibly slow, it took minutes for the GUI transition from screen to screen or provide any response to input.
As a test I bypassed our network and used a standard commercial ISP (cable) connection and Java 2 (Standard Edition) v1.4.2_13 (build-B06) to create the virtual environment then logged into my account. The GUI response time I experienced using this connection was very fast.
Our internet browser is IE 6 or better, changing to a different browser is not an otion.
My question is: Are the security settings of our network affecting the system response time when using Java to create the virtual environment? Or could it be something else?
Thanks for your help
Gambert

RC4 algorithm is patented by RSA Security and it does NOT included into J2SDK 1.4 (there are Blowfish, DES, DESede, PBEWithMD5AndDES and PBEWithMD5AndTripleDE ciphers in SunJCE provider). You can download a free and JDK 1.4 compliant JCE provider with RC4 (and many other ciphers) from http://www.bouncycastle.org/ But keep in mind you may have to pay some royalty if you are going to use it in the production.

Slow response time for HTTP requests

I have an 8310 Pearl. For the past week, I've noticed that the response time using the Internet browser was very slow. One work-around was to cancel the request and then submit it again. The second request returned the page MUCH faster.
I cleared my history, and this seemed to have helped. Has anyone else noticed this? Thanks

Welcome to the forums
Try a Battery Pull:
1. Remove the battery while phone is turned on
2. Wait a few seconds before inserting it again
3. Allow the long boot up process to finish (takes a few minutes usually)
This clears most software issues that occur on blackberries from time to time. You could also use Quickpull, a free app that simulates a battery pull without physically removing the battery: http://software.crackberry.com/product.asp?id=27660
A battery pull reclaims memory lost during application usage and clears minor software errors that creep in over time. The blackberry runs an OS just like your PC runs windows and the battery pull is the equivalent of a reboot/restart on your computer.
Kijana
Please remember to:
1. Mark Accept as Solution on the appropriate post once your issue has been resolved
2. Give Kudos to helpful posts (click the star next to the post)
Thanks

Experiencing very slow response time using AirPort while wired response is fine. Suggestions?

After a surfing session a few weeks ago the response time for my AirPort internet connection became painfully slow. When I plug in to the wired connection it works fine. Resetting the router and modem doesn't seem to fix it. What might have happened and what can I do to fix it?

It is very possible that you may have some form of Wi-Fi interference that appears during these hours that is preventing your AirPort Base Station from providing a clean RF signal.
I suggest you perform a simple site survey, using utilities like iStumbler, Wi-Fi Explorer or AirRadar to determine potential areas of interference, and then, try to either eliminate or significantly reduce them where possible.

Coherence and EclipseLink - JTA Transaction Manager - slow response times

Similar Messages

Maybe you are looking for