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Convert IIS SSL Cert to Apache

November 27, 2009

Export your SSL Cert to a PFX file and include the private key. Copy it to your apache server.

# openssl pkcs12 -in -nocerts -out www.yourdomain.key.pem
# openssl pkcs12 -in -clcerts -nokeys -out www.yourdomain.cert.pem
# openssl rsa -in www.yourdomain.key.pem -out www.yourdomain.key

Copy contents of www.yourdomain.cert.pem between and including BEGIN CERTIFICATE and END CERTIFICATE into www.yourdomain.cert.

Here’s a sample apache virtualhost config file that includes redirecting the non-SSL site to the new SSL site:

<VirtualHost *:80>
 Redirect permanent /

<VirtualHost *:443>
 DocumentRoot /var/www/html
 <Directory /var/www/html>
  AllowOverride All
 SSLEngine on
 SSLCertificateFile /path/to/www.yourdomain.cert
 SSLCertificateKeyFile /path/to/www.yourdomain.key

Filed under: Linux, Microsoft, Uncategorized, Windows | Comments Off on Convert IIS SSL Cert to Apache

Find SQL queries that use too much CPU

November 11, 2009

SELECT total_worker_time/execution_count AS AvgCPU  
, total_worker_time AS TotalCPU
, total_elapsed_time/execution_count AS AvgDuration  
, total_elapsed_time AS TotalDuration  
, (total_logical_reads+total_physical_reads)/execution_count AS AvgReads 
, (total_logical_reads+total_physical_reads) AS TotalReads
, execution_count   
, SUBSTRING(st.TEXT, (qs.statement_start_offset/2)+1  
, ((CASE qs.statement_end_offset  WHEN -1 THEN datalength(st.TEXT)  
ELSE qs.statement_end_offset  
END - qs.statement_start_offset)/2) + 1) AS txt  
, query_plan
FROM sys.dm_exec_query_stats AS qs  
cross apply sys.dm_exec_sql_text(qs.sql_handle) AS st  
cross apply sys.dm_exec_query_plan (qs.plan_handle) AS qp

Take note of the AvgCPU value. Fix the query, clear the query cache with:


run the query again a few times, and run the above query again. Compare the numbers.

Filed under: Uncategorized | Comments Off on Find SQL queries that use too much CPU

Mixing 64 and 32 bit applications pools on OWA website

May 23, 2009

If you need to create and run a 32-bit application pool on the same website you are running Exchange OWA, usually the Default Web Site, you need to make a couple changes. For example, you want to run an old ASP component that only runs in 32 bit mode.

  1. Register the DLL – copy it to \Windows\SysWOW64 and run regsvr32 your.dll
  2. Create a 32 bit application pool in IIS 7 – On the advanced settings, set Enable 32-bit applications = True
  3. Create a subfolder and assign your 32-bit app pool to it.
  4. Modify \Windows\system32\inetsrv\config\applicationhost.config:
    <location path="Default Web Site">
                    <clear />
                    <filter name="Exchange OWA Cookie Authentication ISAPI Filter" path="D:\Program Files\Microsoft\Exchange Server\ClientAccess\owa\auth\owaauth.dll" enabled="true" preCondition="bitness64" />
                    <filter name="Exchange ActiveSync ISAPI Filter" path="D:\Program Files\Microsoft\Exchange Server\ClientAccess\sync\bin\AirFilter.dll" enabled="true" preCondition="bitness64" />

    Notice the added preCondition=”bitness64″. This tells those filters to only run on 64 bit app pools.

Filed under: Microsoft, Windows | Comments (2)