Performance problems when running PostgreSQL on ZFS and tomcat

Hi all,
I need help with some analysis and problem solution related to the below case.
The long story:
I'm running into some massive performance problems on two 8-way HP ProLiant DL385 G5 severs with 14 GB ram and a ZFS storage pool in raidz configuration. The servers are running Solaris 10 x86 10/09.
The configuration between the two is pretty much the same and the problem therefore seems generic for the setup.
Within a non-global zone Im running a tomcat application (an institutional repository) connecting via localhost to a Postgresql database (the OS provided version). The processor load is typically not very high as seen below:
NPROC USERNAME SWAP   RSS MEMORY      TIME CPU
    49 postgres 749M 669M   4,7%   7:14:38 13%
     1 jboss    2519M 2536M    18% 50:36:40 5,9%We are not 100% sure why we run into performance problems, but when it happens we experience that the application slows down and swaps out (according to below). When it settles everything seems to turn back to normal. When the problem is acute the application is totally unresponsive.
NPROC USERNAME SWAP   RSS MEMORY      TIME CPU
    1 jboss    3104M 913M   6,4%   0:22:48 0,1%
#sar -g 5 5
SunOS vbn-back 5.10 Generic_142901-03 i86pc    05/28/2010
07:49:08 pgout/s ppgout/s pgfree/s pgscan/s %ufs_ipf
07:49:13    27.67   316.01   318.58 14854.15     0.00
07:49:18    61.58   664.75   668.51 43377.43     0.00
07:49:23   122.02 1214.09 1222.22 32618.65     0.00
07:49:28   121.19 1052.28 1065.94 5000.59     0.00
07:49:33    54.37   572.82   583.33 2553.77     0.00
Average     77.34   763.71   771.43 19680.67     0.00Making more memory available to tomcat seemed to worsen the problem or at least didnt prove to have any positive effect.
My suspicion is currently focused on PostgreSQL. Turning off fsync boosted performance and made the problem less often to appear.
An unofficial performance evaluation on the database with vacuum analyze took 19 minutes on the server and only 1 minute on a desktop pc. This is horrific when taking the hardware into consideration.
The short story:
Im trying different steps but running out of ideas. Weve read that the database block size and file system block size should match. PostgreSQL is 8 Kb and ZFS is 128 Kb. I didnt find much information on the matter so if any can help please recommend how to make this change
Any other recommendations and ideas we could follow? We know from other installations that the above setup runs without a single problem on Linux on much smaller hardware without specific tuning. What makes Solaris in this configuration so darn slow?
Any help appreciated and I will try to provide additional information on request if needed
Thanks in advance,
Kasper

raidz isnt a good match for databases. Databases tend to require good write performance for which mirroring works better.
Adding a pair of SSD's as a ZIL would probably also help, but chances are its not an option for you..
You can change the record size by "zfs set recordsize=8k <dataset>"
It will only take effect for newly written data. Not existing data.

Similar Messages

Performance problem when running a personalization rule

We have a serious performance problem when running a personalization rule.
The rule is defined like this:
Definition
Rule Type: Content
Content Type: LoadedData
Name: allAnnouncements
Description: all announcements of types: announcement, deal, new release,
tip of the day
If the user has the following characteristics:
And when:
Then display content based on:
(CONTENT.RessourceType == announcement) or (CONTENT.RessourceType == deal)
or (CONTENT.RessourceType == new release) or (CONTENT.RessourceType == tip
of the week)
and CONTENT.endDate > now
and CONTENT.startDate <= now
END---------------------------------
and is invoked in a JSP page like this:
<%String customQuery = "(CONTENT.language='en') && (CONTENT.Country='nl'
|| CONTENT.Country='*' ) && (!(CONTENT.excludeIds like '*#7#*')) &&
(CONTENT.userType ='retailer')"%>
<pz:contentselector
id="cdocs"
ruleSet="jdbc://com.beasys.commerce.axiom.reasoning.rules.RuleSheetDefinitio
nHome/b2boost"
rule="allAnnouncements"
sortBy="startDate DESC"
query="<%=customQuery%>"
contentHome="<%=ContentHelper.DEF_DOCUMENT_MANAGER_HOME%>" />
The customQuery is constructed at runtime from user information, and cannot
be constructed with rules
administration interface.
When I turn on debugging mode, I can see that the rule is parsed and a SQL
query is generated, with the correct parameters.
This is the generated query (with the substitutions):
select
WLCS_DOCUMENT.ID,
WLCS_DOCUMENT.DOCUMENT_SIZE,
WLCS_DOCUMENT.VERSION,
WLCS_DOCUMENT.AUTHOR,
WLCS_DOCUMENT.CREATION_DATE,
WLCS_DOCUMENT.LOCKED_BY,
WLCS_DOCUMENT.MODIFIED_DATE,
WLCS_DOCUMENT.MODIFIED_BY,
WLCS_DOCUMENT.DESCRIPTION,
WLCS_DOCUMENT.COMMENTS,
WLCS_DOCUMENT.MIME_TYPE
FROM
WLCS_DOCUMENT
WHERE
((((WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'announcement'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'deal'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'new release'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = ''
AND WLCS_DOCUMENT_METADATA.VALUE = 'tip of the week'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'press release'
AND (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'endDate'
AND WLCS_DOCUMENT_METADATA.VALUE > '2001-10-22 15:53:14.768'
AND (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'startDate'
AND WLCS_DOCUMENT_METADATA.VALUE <= '2001-10-22 15:53:14.768'
AND ((WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'language'
AND WLCS_DOCUMENT_METADATA.VALUE = 'en'
AND ((WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'Country'
AND WLCS_DOCUMENT_METADATA.VALUE = 'nl'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'Country'
AND WLCS_DOCUMENT_METADATA.VALUE = '*'
AND NOT (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'excludeIds'
AND WLCS_DOCUMENT_METADATA.VALUE LIKE '%#7#%' ESCAPE '\'
AND (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'userType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'retailer'
At this moment, the server makes the user wait more than 10 min for the
query to execute.
This is what I found out about the problem:
1)When I run the query on an Oracle SQL client (We are using Oracle 8.1.7.0)
, it takes 5-10 seconds.
2)If I remove the second term of (CONTENT.Country='nl' ||
CONTENT.Country='*' ) in the custom query,
thus retricting to CONTENT.Country='nl', the performance is OK.
3)There are currently more or less 130 records in the DB that have
Country='*'
4)When I run the page on our QA server (solaris), which is at the same time
our Oracle server,
the response time is OK, but if I run it on our development server (W2K),
response time is ridiculously long.
5)The problem happens also if I add the term (CONTENT.Country='nl' ||
CONTENT.Country='*' )
to the rule definition, and I remove this part from the custom query.
Am I missing something? Am I using the personalization server correctly?
Is this performance difference between QA and DEV due to differences in the
OS?
Thank you,
Luis Muñiz

Luis,
I think you are working through Support on this one, so hopefully you are in good
shape.
For others who are seeing this same performance issue with the reference CM implementation,
there is a patch available via Support for the 3.2 and 3.5 releases that solves
this problem.
This issue is being tracked internally as CR060645 for WLPS 3.2 and CR055594 for
WLPS 3.5.
Regards,
PJL
"Luis Muniz" <[email protected]> wrote:
We have a serious performance problem when running a personalization
rule.
The rule is defined like this:
Definition
Rule Type: Content
Content Type: LoadedData
Name: allAnnouncements
Description: all announcements of types: announcement, deal, new release,
tip of the day
If the user has the following characteristics:
And when:
Then display content based on:
(CONTENT.RessourceType == announcement) or (CONTENT.RessourceType ==
deal)
or (CONTENT.RessourceType == new release) or (CONTENT.RessourceType ==
tip
of the week)
and CONTENT.endDate > now
and CONTENT.startDate <= now
END---------------------------------
and is invoked in a JSP page like this:
<%String customQuery = "(CONTENT.language='en') && (CONTENT.Country='nl'
|| CONTENT.Country='*' ) && (!(CONTENT.excludeIds like '*#7#*')) &&
(CONTENT.userType ='retailer')"%>
<pz:contentselector
id="cdocs"
ruleSet="jdbc://com.beasys.commerce.axiom.reasoning.rules.RuleSheetDefinitio
nHome/b2boost"
rule="allAnnouncements"
sortBy="startDate DESC"
query="<%=customQuery%>"
contentHome="<%=ContentHelper.DEF_DOCUMENT_MANAGER_HOME%>" />
The customQuery is constructed at runtime from user information, and
cannot
be constructed with rules
administration interface.
When I turn on debugging mode, I can see that the rule is parsed and
a SQL
query is generated, with the correct parameters.
This is the generated query (with the substitutions):
select
WLCS_DOCUMENT.ID,
WLCS_DOCUMENT.DOCUMENT_SIZE,
WLCS_DOCUMENT.VERSION,
WLCS_DOCUMENT.AUTHOR,
WLCS_DOCUMENT.CREATION_DATE,
WLCS_DOCUMENT.LOCKED_BY,
WLCS_DOCUMENT.MODIFIED_DATE,
WLCS_DOCUMENT.MODIFIED_BY,
WLCS_DOCUMENT.DESCRIPTION,
WLCS_DOCUMENT.COMMENTS,
WLCS_DOCUMENT.MIME_TYPE
FROM
WLCS_DOCUMENT
WHERE
((((WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'announcement'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'deal'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'new release'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = ''
AND WLCS_DOCUMENT_METADATA.VALUE = 'tip of the week'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'RessourceType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'press release'
AND (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'endDate'
AND WLCS_DOCUMENT_METADATA.VALUE > '2001-10-22 15:53:14.768'
AND (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'startDate'
AND WLCS_DOCUMENT_METADATA.VALUE <= '2001-10-22 15:53:14.768'
AND ((WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'language'
AND WLCS_DOCUMENT_METADATA.VALUE = 'en'
AND ((WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'Country'
AND WLCS_DOCUMENT_METADATA.VALUE = 'nl'
)) OR (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'Country'
AND WLCS_DOCUMENT_METADATA.VALUE = '*'
AND NOT (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'excludeIds'
AND WLCS_DOCUMENT_METADATA.VALUE LIKE '%#7#%' ESCAPE '\'
AND (WLCS_DOCUMENT.ID IN (
SELECT
WLCS_DOCUMENT_METADATA.ID
FROM
WLCS_DOCUMENT_METADATA
WHERE
WLCS_DOCUMENT_METADATA.ID = WLCS_DOCUMENT.ID
AND WLCS_DOCUMENT_METADATA.NAME = 'userType'
AND WLCS_DOCUMENT_METADATA.VALUE = 'retailer'
At this moment, the server makes the user wait more than 10 min for the
query to execute.
This is what I found out about the problem:
1)When I run the query on an Oracle SQL client (We are using Oracle 8.1.7.0)
, it takes 5-10 seconds.
2)If I remove the second term of (CONTENT.Country='nl' ||
CONTENT.Country='*' ) in the custom query,
thus retricting to CONTENT.Country='nl', the performance is OK.
3)There are currently more or less 130 records in the DB that have
Country='*'
4)When I run the page on our QA server (solaris), which is at the same
time
our Oracle server,
the response time is OK, but if I run it on our development server (W2K),
response time is ridiculously long.
5)The problem happens also if I add the term (CONTENT.Country='nl' ||
CONTENT.Country='*' )
to the rule definition, and I remove this part from the custom query.
Am I missing something? Am I using the personalization server correctly?
Is this performance difference between QA and DEV due to differences
in the
OS?
Thank you,
Luis Muñiz

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Hi,
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SOME STEPS USED TO IMPROVE UR PERFORMANCE:
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2. Use WHERE clause in your SELECT statement to restrict the volume of data retrieved.
3. Design your Query to Use as much index fields as possible from left to right in your WHERE statement
4. Use FOR ALL ENTRIES in your SELECT statement to retrieve the matching records at one shot.
5. Avoid using nested SELECT statement SELECT within LOOPs.
6. Avoid using INTO CORRESPONDING FIELDS OF TABLE. Instead use INTO TABLE.
7. Avoid using SELECT * and Select only the required fields from the table.
8. Avoid nested loops when working with large internal tables.
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12. Use "CHECK" instead of IF/ENDIF whenever possible.
13. Use "CASE" instead of IF/ENDIF whenever possible.
14. Use "MOVE" with individual variable/field moves instead of "MOVE-
CORRESPONDING" creates more coding but is more effcient.

I have a problem when running my own EJB as a TUXEDO service using WTC.

Hello,
I have a problem when running my own EJB as a TUXEDO service using WTC. I am using TUXEDO 8.1 and WL 9.1.
When I am trying to run my own EJB as a TUXEDO service error appears.
TPENOENT(6):0:0:TPED_MINVAL(0):QMNONE(0):0:Could not find service TOUPPER
at weblogic.wtc.gwt.WTCService.getImport(WTCService.java:4988)
at weblogic.wtc.gwt.TuxedoConnection.getImport(TuxedoConnection.java:303)
at weblogic.wtc.gwt.TuxedoConnection.tpcall(TuxedoConnection.java:1302)
at examples.MyTestSessionBean.Toupper(MyTestSessionBean.java:102)
at examples.TestSessionBean_knby6k_EOImpl.Toupper(TestSessionBean_knby6k_EOImpl.java:61)
at net.roseindia.web.servlets.SessionTestServlet.doGet(SessionTestServlet.java:69)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:165)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3153)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1973)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1880)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1310)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
e8
10
java.rmi.RemoteException: EJB Exception: ; nested exception is:
java.lang.NullPointerException
at weblogic.ejb.container.internal.EJBRuntimeUtils.throwRemoteException(EJBRuntimeUtils.java:95)
at weblogic.ejb.container.internal.BaseEJBObject.handleSystemException(BaseEJBObject.java:713)
at weblogic.ejb.container.internal.BaseEJBObject.handleSystemException(BaseEJBObject.java:681)
at weblogic.ejb.container.internal.BaseEJBObject.postInvoke1(BaseEJBObject.java:447)
at weblogic.ejb.container.internal.StatelessEJBObject.postInvoke1(StatelessEJBObject.java:72)
at weblogic.ejb.container.internal.BaseEJBObject.postInvokeTxRetry(BaseEJBObject.java:374)
at examples.TestSessionBean_knby6k_EOImpl.Toupper(TestSessionBean_knby6k_EOImpl.java:75)
at net.roseindia.web.servlets.SessionTestServlet.doGet(SessionTestServlet.java:69)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:165)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3153)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1973)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1880)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1310)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
Caused by: java.lang.NullPointerException
at examples.MyTestSessionBean.Toupper(MyTestSessionBean.java:130)
at examples.TestSessionBean_knby6k_EOImpl.Toupper(TestSessionBean_knby6k_EOImpl.java:61)
... 15 more
Any clue on this.
With Regards,
MVS

If you are trying to create a Tuxedo service in Java using WTC you need to develop an EJB that implements the TuxedoService interface and register its home in JNDI so WTC can look it up. Once that is done you can then export the service to a remote domain in the WTC configuration.
Regards,
Todd Little
Oracle Tuxedo Chief Architect

Scarey problem when running anything in 3D mode

Hi,
I own a MSI KT4 Ultra motherboard, have done for years and it worked flawlessly with my Voodoo3 3000 PCI graphics card. However, a while ago I retired the old beast in favour of a (then new) Nvidia FX 5950 Ultra AGP card. After a while, I noticed a very scarey problem when running any 3D applications...
The first time I noticed it happening, I was playing Max Payne 2. The game suddenly went very slow, then the machine suddenly powered off (as if I pulled the power plug). I was unable to get it to restart, and eventually traced the problem back to my PSU, or so I thought...
So, with a new PSU, I was okay for about a month, when it happened again, different game this time. So I promptly brought yet another PSU.
Now with this PSU, when the system powers off in that scarey fashion it does, the computer actually re-starts when I pull the power cable out, count to 30, and put it back in again. Yet this PSU is a mear 300w (the others were 400w and 550w).
Now the really scarey thing is that it's happening a whole lot more now. Even in 3D screensavers! When I played UT2004 this morning, it happened before I could even start a game! It seems that *any* 3D app causes this problem. It's very scarey seeing your computer shut down in this way.
I tried re-setting the BIOS to 'safe' settings. However, if anything, it made the problem worse!
I've noticed this behaviour in both Windows XP and Linux.
Specs I think would be usefull:
Athlon XP 2600+
NVidia FX 5950 Ultra
2 HDs
1 CD-Rom
Lots of fans (still runs hotter than I'd like, but is stable).
Any help would be appeciated
-Ribs.

Hi,
Spoke too soon , right after I made that post, my machine crashed and rebooted in the most awfull fashion whilst playing Enemy Territory.
I have a feeling it could be to do with how hard the hardware is being pushed. As UT2004 nearly always breaks, and pushes the hardware a lot harder than Enemy Territory does (Enemy Territory worked on my old Voodoo3 3000 PCI!). I can usually play a good session of Enemy territory and get bored of the game so I quit without doing a restart.
I've still yet to get a new PSU (money is tight at the moment). I'll be able to get a new one soon. Any suggestions on a uber-powerfull one that couldn't possibly be underpowered? Preferably with two fans (inside and out) with a passthrough for my monitor.
Thanks.
-Ribs.

Audio problem when running Win XP Pro SP3

I have a problem when running Windows XP SP3 on my MacBook. Every minute or so, and this happens consistently, the music would be played in a slow-motion mode, and after a few seconds return to normal speed. I have exchanged for another MacBook, and I am having the exact same problem. I have all the drivers installed properly, and have tried both iTunes and WMP. This even happens when I am gaming or watching YouTube.
The problem does not exist when I'm running Mac OS X.
Any help would be greatly appreciated. Thanks.

After spending a few hours googling around I finally found the solution to the problem. At first I thought it was something wrong with my Windows XP Pro, but apparently people running Vista were having the same problem.
I installed Vista myself and indeed was having the same problem.
The problem apparently is a clash between the sound card and the WiFi card on the MacBook. If you turn off your WiFi, you would not get the occasional adio/video slowdown.
The solution was actually quite simple, force-install the 5.x Broadcom 802.11n driver, and voila, problem taken care of.
Message was edited by: docomo661

Performance Issues when running 1.5.0_9 with servers

Hi. We have an application in Java. We run it using 1.5.0_9 on Win2003 and have no problems when running it on single Intel CPU PCs and Servers. However, whenever we are finding that some higher spec servers are running the application significantly slower... around 30%. It seems that it's either a problem with the Enterprise version of Win2k3 or perhaps with AMD Opteron CPUs.
Does anyone know of any known issues with Win2k3 Enterprise or AMD Opteron CPUs or simply any dual CPU technology?
Thanks
Edited by: gingerdazza on Jul 2, 2008 1:21 AM

I'm able to recreate the problem where a section of a screen goes black using with the following config.
JDK 1.7.0_06
2 graphics cards
3 monitors
Create a New JavaFX Application Project (Hello World) in NetBeans 7.2. Once executed position the window so it spans two monitors, ensure the monitors are on seperate graphics cards and then hover the mouse of the Hello World button and one half of the window goes black. Positioning the window so it doesn't span a monitor draws the window correctly.
Has anyone experienced this issue?
Thanks.

[svn] 3363: Fix performance problem when changing multiple DisplayObject-dependent properties .

Revision: 3363
Author: [email protected]
Date: 2008-09-25 11:58:56 -0700 (Thu, 25 Sep 2008)
Log Message:
Fix performance problem when changing multiple DisplayObject-dependent properties. The call to assignDisplayObjects() is now batched up into the next commitProperties() call.
Bugs: SDK-17033
Reviewer: Deepa
Ticket Links:
http://bugs.adobe.com/jira/browse/SDK-17033
Modified Paths:
flex/sdk/trunk/frameworks/projects/flex4/src/flex/core/Group.as

hello sir,
i want to your help
i was installed fresh windows 7 via cd rom and then after installed all software.
and now after 1 day customer complained me that cd rom not read any cd and i m also check when i insurt cd so its not read and when i am double click on cd rom icon its eject so what i do for that please reply on my email address.
[text removed for privacy]
VIMAL

Performance hit when running in ARCHIVELOG mode.

What is the performance hit when running in ARCHIVELOG mode?
Thank you,
David

I am not one to disagree with Tom Kyte (unless I think he is wrong :) ), and I am not going to disagree here. I do caution the simplistic answer that the hit is negligible. I commend the respondent who qualified that answer with a discussion of I/O.
I have come across more than one situation where archive logging was a performance hit because of the associated I/O. Many want to put archive logs on cheaper storage and do not recognize that not only can this slow a system but that it could become a major issue resulting in a system that hangs until the logs are written. A better solution for these folks is to write to fast storage and have a secondary process that offloads those logs to the slower storage.
Let us also not assume that the archive location is local disk. It might be that an archive location is remote, such as with log shipping or NFS. Network latency can become an issue.
There are many things to consider as there always are. I suppose with any answer, even if simple, one could spin it with some obscure situation that makes the simple answer inappropriate. Having seen some burned by this issue, I chose to elaborate, and I appreciate your indulgence.
Chris

Performance problems when running PostgreSQL on ZFS and tomcat

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