SQL Server Query Plan Generation take longer

Dear all,
We are dealing with a wired issue where queries on there first execution take approx 1 min to 2 mins to execute and later execution completes in less than a second,Can you please help us understand why sql server is taking longer time to generated the query
plan
Below is the result of files stats
Mohd Sufian www.sqlship.wordpress.com Please mark the post as Answered if it helped.

SYS.DM_OS_MEMORY_CLERKS
MEMORYCLERK_SQLOPTIMIZER 136 912
CACHESTORE_PHDR 1864 0
CACHESTORE_XMLDBTYPE 8 0
CACHESTORE_EVENTS 16 0
USERSTORE_OBJPERM 824 0
USERSTORE_TOKENPERM 840 968
MEMORYCLERK_SQLSTORENG 2736 4312
CACHESTORE_FULLTEXTSTOPLIST 32 0
MEMORYCLERK_XE 64 168
CACHESTORE_XPROC 72 0
OBJECTSTORE_SNI_PACKET 3336 112
CACHESTORE_BROKERRSB 8 0
OBJECTSTORE_SERVICE_BROKER 424 0
MEMORYCLERK_SQLSERVICEBROKERTR MEMORYCLERK_XE_BUFFER 0 0
MEMORYCLERK_SQLGENERAL 1608 4144
CACHESTORE_XMLDBATTRIBUTE 8 0
MEMORYCLERK_SQLHTTP 8 0
CACHESTORE_STACKFRAMES 0 16
MEMORYCLERK_SQLCONNECTIONPOOL 2440 0
CACHESTORE_XMLDBELEMENT 8 0
OBJECTSTORE_LOCK_MANAGER 24 0
MEMORYCLERK_SQLBUFFERPOOL 0 1688
MEMORYCLERK_SQLSOAP 0 0
MEMORYCLERK_TRACE_EVTNOTIF 0 0
CACHESTORE_OBJCP 6576 512
CACHESTORE_CONVPRI 64 0
MEMORYCLERK_QSRANGEPREFETCH 0 0
CACHESTORE_BROKERREADONLY 80 0
MEMORYCLERK_SQLCLRASSEMBLY 0 0
MEMORYCLERK_SOSNODE 8 16320
MEMORYCLERK_SQLQUERYPLAN 0 0
OBJECTSTORE_SECAUDIT_EVENT_BUFFER 16 0
CACHESTORE_SQLCP 22680 3544
OBJECTSTORE_LBSS 96 192
CACHESTORE_SYSTEMROWSET 1832 0
MEMORYCLERK_FULLTEXT 24 0
USERSTORE_SCHEMAMGR 2632 328
MEMORYCLERK_SQLQUERYCOMPILE 0 0
CACHESTORE_TEMPTABLES 16 0
CACHESTORE_BROKERTBLACS 200 0
CACHESTORE_BROKERTO 8 0
CACHESTORE_BROKERKEK 8 0
MEMORYCLERK_SQLXML 0 0
USERSTORE_SXC 64 0
MEMORYCLERK_SNI 240 32
MEMORYCLERK_FULLTEXT_SHMEM 0 0
CACHESTORE_BROKERUSERCERTLOOKUP 8 0
MEMORYCLERK_SQLSOAPSESSIONSTORE 0 0
MEMORYCLERK_HOST 16 0
MEMORYCLERK_SQLCLR 8 0
MEMORYCLERK_SQLXP 16 0
USERSTORE_DBMETADATA 1912 0
MEMORYCLERK_SQLUTILITIES 112 0
CACHESTORE_VIEWDEFINITIONS 16 0
MEMORYCLERK_SQLQUERYEXEC 80 0
sys.dm_os_performance_counters
object_name counter_name cntr_value
/> /> /> /> /> /> Buffer cache hit ratio 556
Buffer cache hit ratio base 612
Page lookups/sec 4054066
Free list stalls/sec 0
Free pages 483
Total pages 503088
Target pages 1710080
Database pages 494479
Reserved pages 0
Stolen pages 8126
Lazy writes/sec 0
Readahead pages/sec 378700
Page reads/sec 493985
Page writes/sec 2421
Checkpoint pages/sec 0
AWE lookup maps/sec 0
AWE stolen maps/sec 0
AWE write maps/sec 0
AWE unmap calls/sec 0
AWE unmap pages/sec 0
Page life expectancy 262
Cache Hit Ratio 0
Cache Hit Ratio Base 0
Cached Cursor Counts 0
Cursor Cache Use Counts/sec 0
Cursor Requests/sec 0
Active cursors 0
Cursor memory usage 0
Cursor worktable usage 0
Number of active cursor plans 0
Cache Hit Ratio 0
Cache Hit Ratio Base 0
Cached Cursor Counts 0
Cursor Cache Use Counts/sec 0
Cursor Requests/sec 0
Active cursors 0
Cursor memory usage 0
Cursor worktable usage 0
Number of active cursor plans 0
Cache Hit Ratio 0
Cache Hit Ratio Base 0
Cached Cursor Counts 0
Cursor Cache Use Counts/sec 0
Cursor Requests/sec 0
Active cursors 0
Cursor memory usage 0
Cursor worktable usage 0
Number of active cursor plans 0
Cache Hit Ratio 0
Cache Hit Ratio Base 0
Cached Cursor Counts 0
Cursor Cache Use Counts/sec 0
Cursor Requests/sec 0
Active cursors 0
Cursor memory usage 0
Cursor worktable usage 0
Number of active cursor plans 0
Cursor conversion rate 0
Async population count 0
Cursor flushes 0
Connection Memory (KB) 2864
Granted Workspace Memory (KB) 0
Lock Memory (KB) 7944
Lock Blocks Allocated 40550
Lock Owner Blocks Allocated 43550
Lock Blocks 10003
Lock Owner Blocks 10133
Maximum Workspace Memory (KB) 10280520
Memory Grants Outstanding 0
Memory Grants Pending 0
Optimizer Memory (KB) 1048
SQL Cache Memory (KB) 2080
Target Server Memory (KB) 13680640
Total Server Memory (KB) 4024704
Please mark the post as Answered if it helped.

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SQL> set serveroutput on
SQL> declare
2 val varchar2(100);
3 c integer;
4 nr integer;
5 begin
6 c:= dbms_hs_passthrough.open_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3;
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15 end;
16 /
24576
PL/SQL procedure successfully completed.
SQL> declare
2 val varchar2(100);
3 c integer;
4 nr integer;
5 begin
6 c:= dbms_hs_passthrough.open_cursor@FREETDS_DG4ODBC_EMGTW_11_2_0_3;
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11 dbms_hs_passthrough.get_value@FREETDS_DG4ODBC_EMGTW_11_2_0_3(c,1,val);
12 dbms_output.put_line(val);
13 end loop;
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15 end;
16 /
24576
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SQL> declare
2 val varchar2(100);
3 c integer;
4 nr integer;
5 tabname varchar2(20) :='EMP';
6 ownr varchar2(20) :='dbo';
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14 dbms_hs_passthrough.get_value@FREETDS_DG4ODBC_EMGTW_11_2_0_3(c,1,val);
15 dbms_output.put_line(val);
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18 end;
19 /
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null

Rhys,
I assume you are talking about Designer generation. Which
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rhys smallwood (guest) wrote:
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Copyright (c) 1988-2005 Microsoft Corporation
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Ronen Ariely
[Personal Site] [Blog] [Facebook]

SQL Server Query Plan Generation take longer

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