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CPU spikes to 100% on Domino LDAP task when there are many nested groups
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Fri, Jul 18th 2014 168
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Apply Microsoft hotfix for Windows 2003 servers to avoid performance impact
Kenio Carvalho    

From TN1497501

When the Sametime meeting server (the classic meeting server for Sametime 8.5x) is under stress, a problem in Microsoft Windows 2003 SP2 described in "TCP connections fail intermittently when both endpoints are on the same computer in Windows Server 2003 SP2 (Article ID: 979230)" can lead to the failure of current meetings, as well as the failure to launch new meetings.

To prevent this situation from affecting the performance of your Sametime server, apply the hotfix Fix307523 as indicated in the Microsoft article linked above.  This hotfix is for Windows 2003 SP2; those customers not running SP2 must install SP2 before applying this hotfix.

Additional information

As noted in the Microsoft article, this problem can occur when an application makes a TCP connection to localhost.  For example, the Sametime server code uses localhost connections for communication between its modules. Under stress, a race condition in the TCP/IP driver in Windows 2003 can orphan these localhost TCP connections, causing applications like Sametime that rely on these connections to fail.  

Restarting the system can provide temporary relief, until such time as stress leads to the next instance of the TCP/IP localhost failure.

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http://platao.plansis.com.br/blogkenio.nsf/dx/performance2003sp2.htm
May 05, 2011
39 hits



Recent Blog Posts
142


Denied access Notes users are still able to access mails through IBM Notes Traveler
Wed, Aug 27th 2014 5:30a   Kenio Carvalho
When people leaves the company i always put the user on a deny access group, remove the account and delete the mail database. But if you do not delete the account... Once the user added in Deny access group to Deny Traveler access you need to enable "Enforce server access setting" to Yes in the server document under Ports -> Internet Ports -> Web tab. Follow the below steps to enable the 'Enforce server access setting' to Yes in Server document: 1) Open the Domino Administrator c [read] Keywords: domino ibm notes traveler database server
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No buffer space available (maximum connections reached?)
Tue, Aug 26th 2014 7:12a   Kenio Carvalho
Yesterday a portal cluster stops to respond requests after 4 months of work without a restart. I found a lot of messages on systemout.log 8/25/14 10:13:21:418 BRT] 00000171 exception E com.ibm.ws.wim.adapter.ldap.LdapConnection DirContext reCreateDirContext(String errorMessage) com.ibm.websphere.wim.exception.WIMSystemException: CWWIM4520E 'javax.naming.CommunicationException: [Root exception is java.net.SocketException: No buffer space avai [read] Keywords: connections ibm java microsoft websphere
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Supportability Q&A about IBM Notes and OS X 10.10.x
Mon, Aug 25th 2014 10:58a   Kenio Carvalho
IBM published a TN about Notes and the upcoming Apple's OS X 10.10 Yosemite [read] Keywords: ibm notes apple
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CPU spikes to 100% on Domino LDAP task when there are many nested groups
Mon, Aug 25th 2014 8:03a   Kenio Carvalho
This issue is fixed in 9.0.1 Fix Pack 2 via the new INI parameter described below. Fix Details: SPR# MJON9GQHLL - Fixes potential performance degradation in LDAP search when there are many nested groups. This fix introduces the new ini: LDAP_COMPLEX_FILTER. When this ini is set to 1, the code path for the fix for SPR# CAHT959LQG is enabled and the performance degradation could result. Setting this ini to 0, disables the code path and no performance degradation will be seen. [read] Keywords: domino
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Wed, Jul 30th 2014 9:11p   Kenio Carvalho
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168


DWA message disclaimer is added on emails sent to Notes users
Fri, Jul 18th 2014 6:11a   Kenio Carvalho
A costumer yesterday ask the exact question i found on this link http://www-01.ibm.com/support/docview.wss?uid=swg1LO43023 If a DWA message disclaimer is set and a DWA user sends an email where the recipient is an internal user - i.e. address is Notes mail format not internet format, the Notes user receives the message disclaimer. This is a known behavior in Notes/Domino and reported to Quality engineering in SPR # KBRT67FN7B as an Enhancement request and currently there are no plans to addr [read] Keywords: domino dwa ibm notes R8 email




231


Delete users from IBM Connections when you have only the Display Name
Fri, Jun 27th 2014 5:11p   Kenio Carvalho
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’Unable to find path to server’ when trying to connect
Wed, Jun 11th 2014 6:12a   Kenio Carvalho
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190


IBM Digital Data Connector (DDC) for WebSphere Portal
Tue, Jun 10th 2014 6:07a   Kenio Carvalho
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