Tuesday, April 29, 2008

IIS 6.0 thread access Issue

Three weeks earlier i faced an issue in my MOSS environment.I have an enterprise MOSS farm environment consists of 6 Front-end servers and 5 Application servers. During installation of portal AV solution on these servers, i found that IIS on 5 of these servers were not responding. I opened IIS administration console but nothing was showing. I restarted IIS on all servers but no luck, then i did some research on it and found following MS KB on the same issue

"You may be unable to manage IIS 6.0 by using Server Manager if two threads access IIS 6.0 at the same time"


As per this KB this issue is because "two threads access IIS 6.0 at the same time. In this scenario, you may be unable to manage IIS 6.0 by using Server Manager."
Also regarding SharePoint as per this KB "This problem is likely to occur for the SharePoint Timer service (OWSTimer.exe) in Microsoft Office SharePoint Server 2007. When this problem occurs for the SharePoint Timer service, you may experience the following symptoms:
  • In SharePoint Server 2007, tasks that are scheduled do not run.
  • When you try to manage IIS 6.0 by using Server Manager, you receive a blank page, or you receive the following error message: The path specified cannot be used at this time"
There is an hot-fix mentioned in this KB but it is not publicly available, one has to request Microsoft support for acquiring this. I got this hot-fix from my Microsoft account manager within an hour (because of our good relationship with them ;)) and had applied it instantaneously. The issue was fixed after this patch and haven't occurred yet.

I think that this hot-fix will be included in new windows 2003 service pack(SP3) and also might addressed in IIS 6.0 successor i.e IIS 7.0.

Sunday, April 13, 2008

Using SharePoint designer 2007 for backup and restore SharePoint 2003 sites

Before release of SharePoint designer, SharePoint sites can be backed-up and restore by using “smigrate” or “stsadm” tool. Both of these tools are command line and required some background SharePoint knowledge. SharePoint designer is a new tool in this breed; one can easily backup and restore SharePoint sites by using SharePoint designer GUI and performing some basic steps. Following are the simple steps which can be followed for backing up and restoring any SharePoint site.

Site Backup:

Step 1: Open Sharepoint site in Designer

Step 2: Go to Site->Administration->Backup website

Step 3: Click OK

Step 4: Give Name and location of backup file and click Save.

Site Restore:

Step1: Create new SharePoint site for restore (Do not apply template on newly created site, Stop on Template selection screen and don’t click ok)

Step 2: Copy the URL from the Template selection screen (Don’t click ok)

Step 3: Paste this URL in Open site dialog box.

Step 4: Go to Site->Administration->Restore website

Step 5: Select backup file for restore.

Step 6: Click OK for restore.

You will get success message after successful restore

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Use Google Maps to find Google data centers

Pingdom, using information from Data Center Knowledge, has put together an online map showing where Google has build 36 data centers.

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Microsoft ready to 'Mesh it up'

Taking a page from Apple's PR playbook, the company sends out a teaser invitation for an April 24 event to launch Live Mesh, but offers no new details.

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Saturday, April 12, 2008

Visualizing Computer Viruses

Want to see computer viruses, funny isn't it? well now its possible to visualize computer viruses. MIT Media Lab's grad student Alex Dragulescu has created some algorithms which can be run on virus data for visualizing it. The algorithm analyzes virus data patterns and then draw imaginary virus which can be seen as a computer simulation.

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RSA 2008: Blanketing security

The annual RSA Conference on information security opens this week in San Francisco, featuring such hot topics as cybersecurity, cryptography, and warrantless wiretapping.

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