OCCI VS 2008 & OCCI 11.1.0.6.0 Performance Problem

Question

I have been using VS C++ 2003 in combination with the oracle instant client 10.2.0.4 in our tool. We now moved to VS C++ 2008 (Express Edition) and oracle instant client 11.1.0.6.0 as listed at
[http://www.oracle.com/technology/tech/oci/occi/occidownloads.html]
I noticed a significant performance change for even simple queries on using the 11.1.0.6.0 client.
Does anybody else noticed any performance problems with the 11.1.0.6.0 client libraries for VS C++9(VS 2008) 32 bit?
I made a small test program which just connects to the db instance and makes a simple select and afterwards iterate through the result and calculate count by just incrementing. Following is the output of the same program, first with the 11.1.0.6.0 client and afterwards with the 10.2.0.4.0 client.
Testing OCCI
Using Oracle Client:Oracle 11.1.0.6.0
Connected to Server lsy_ext.world
Version :Oracle9i Enterprise Edition Release 9.2.0.5.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.5.0 - Production
beginning select :select * from schedule
Current time and date: Tue Mar 17 13:05:27 2009
Select finished:select * from schedule
Current time and date: Tue Mar 17 13:05:31 2009
beginning iteration through result
Current time and date: Tue Mar 17 13:05:31 2009
iteration finished
Current time and date: Tue Mar 17 13:05:31 2009
Total Data for
select * from schedule
Count = 578
beginning select :select * from leg
Current time and date: Tue Mar 17 13:05:31 2009
Select finished:select * from leg
Current time and date: Tue Mar 17 13:05:36 2009
beginning iteration through result
Current time and date: Tue Mar 17 13:05:36 2009
iteration finished
Current time and date: Tue Mar 17 13:05:48 2009
Total Data for
select * from leg
Count = 981011
Testing OCCI
Using Oracle Client:Oracle 10.2.0.4.0
Connected to Server lsy_ext.world
Version :Oracle9i Enterprise Edition Release 9.2.0.5.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.5.0 - Production
beginning select :select * from schedule
Current time and date: Tue Mar 17 13:04:03 2009
Select finished:select * from schedule
Current time and date: Tue Mar 17 13:04:03 2009
beginning iteration through result
Current time and date: Tue Mar 17 13:04:03 2009
iteration finished
Current time and date: Tue Mar 17 13:04:03 2009
Total Data for
select * from schedule
Count = 578
beginning select :select * from leg
Current time and date: Tue Mar 17 13:04:03 2009
Select finished:select * from leg
Current time and date: Tue Mar 17 13:04:03 2009
beginning iteration through result
Current time and date: Tue Mar 17 13:04:03 2009
iteration finished
Current time and date: Tue Mar 17 13:04:15 2009
Total Data for
select * from leg
Count = 981011
Apparently, each select statement takes round about 5 seconds with the 11 client libraries. Does anybody has an explanation for this?
beginning select :select * from schedule
Current time and date: Tue Mar 17 13:05:*27* 2009
Select finished:select * from schedule
Current time and date: Tue Mar 17 13:05:*31* 2009
Thank you
Benny
Edited by: bennyvar on Mar 18, 2009 12:25 PM

Answer 1

I started visual studio with logging turned on. Here are the results from the log file:
<entry>
<record>60</record>
<time>2008/01/18 19:14:09.974</time>
<type>Information</type>
<source>Microsoft Visual Studio</source>
<description>Entering function CVsPackageInfo::HrInstantiatePackage</description>
<guid>{D601BB95-E404-4A8E-9F24-5C1A462426CE}</guid>
</entry>
<entry>
<record>61</record>
<time>2008/01/18 19:14:11.026</time>
<type>Warning</type>
<source>Microsoft Visual Studio Appid Stub</source>
<description>CheckPackageSignature failed; invalid Package Load Key</description>
<guid>{D601BB95-E404-4A8E-9F24-5C1A462426CE}</guid>
</entry>
<entry>
<record>62</record>
<time>2008/01/18 19:14:11.056</time>
<type>Information</type>
<source>Microsoft Visual Studio</source>
<description>Begin package load [Oracle Developer Tools for Visual Studio .NET]</description>
<guid>{D601BB95-E404-4A8E-9F24-5C1A462426CE}</guid>
</entry>
<entry>
<record>63</record>
<time>2008/01/18 19:14:16.273</time>
<type>Error</type>
<source>Microsoft Visual Studio</source>
<description>SetSite failed for package [Oracle Developer Tools for Visual Studio .NET]</description>
<guid>{D601BB95-E404-4A8E-9F24-5C1A462426CE}</guid>
<hr>80004005 - E_FAIL</hr>
</entry>
<entry>
<record>64</record>
<time>2008/01/18 19:14:16.313</time>
<type>Error</type>
<source>Microsoft Visual Studio</source>
<description>End package load [Oracle Developer Tools for Visual Studio .NET]</description>
<guid>{D601BB95-E404-4A8E-9F24-5C1A462426CE}</guid>
<hr>80004005 - E_FAIL</hr>
</entry>