Significant difference in response times for same query running on Windows client vs database server
From: <mjmstud_at_gmail.com>
Date: Wed, 29 Jan 2014 16:15:20 -0800 (PST)
Message-ID: <752cfcd9-b397-4838-826f-a955be32110b_at_googlegroups.com>
I have a query which is taking a long time to return the results using the Oracle client. When I run this query on our database server (Unix/Solaris) it completes in 80 seconds. When I run the same query on a Windows client it completes in 47 minutes. Ideally I would like to get a response time equivalent on the Windows client to what I get when running this on the database server. In both cases the query plans are the same. The query and plan is shown below :
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)|
Date: Wed, 29 Jan 2014 16:15:20 -0800 (PST)
Message-ID: <752cfcd9-b397-4838-826f-a955be32110b_at_googlegroups.com>
I have a query which is taking a long time to return the results using the Oracle client. When I run this query on our database server (Unix/Solaris) it completes in 80 seconds. When I run the same query on a Windows client it completes in 47 minutes. Ideally I would like to get a response time equivalent on the Windows client to what I get when running this on the database server. In both cases the query plans are the same. The query and plan is shown below :
{code}
SQL> explain plan
2 set statement_id = 'SLOW'
3 for
4 SELECT DISTINCT /*+ FIRST_ROWS(503) */ objecttype.id_object
5 FROM documents objecttype WHERE objecttype.id_type_definition = 'duotA9'
6 ;
Explained.
SQL> select * from table(dbms_xplan.display('PLAN_TABLE','SLOW','TYPICAL'));
PLAN_TABLE_OUTPUT
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)|
| 0 | SELECT STATEMENT | | 2852K| 46M| | 69851 (1)| | 1 | HASH UNIQUE | | 2852K| 46M| 153M| 69851 (1)| |* 2 | TABLE ACCESS FULL| DOCUMENTS | 2852K| 46M| | 54063 (1)|{code}
-----------------------------------------------------------------------------
The version on the database server is 10.2.0.1.0 The version of the oracle client is also 10.2.0.1.0
I am happy to provide any further information if required.
Thank you in advance. Received on Thu Jan 30 2014 - 01:15:20 CET