Reply to DBCC Memory Status and Query Plan

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Posted by masri999 on 10/27/06 00:01

When I executed DBCC Memory Status following are the out put
Buffer Distribution

Stolen 187191
Free 1026
Procedures 6698
Inram 0
Dirty 154661
Kept 0
I/O 0
Latched 772
Other 436084

Buffer Counts

Committed 786432
Target 786432
Hashed 591517
Internal Reservation 510
External Reservation 2291
Min Free 1024
Visible 200408


Procedure Cache

Total Procs 563
TotalPages 6698
InUsePages 6576


Dynamic Memory Manager

Stolen 192631
OS Reserved 920
OS Committed 898
OS In Use 894
General 5017
Query Paln 183216
Optimizer 0
Utilites 658
Connection 4110


Global Memory Objects

Resource 3428
Locks 477
SQLCache 850
Replication 2
LockBytes 2
ServerGlobal 22
Xact 260

Query Memory Manager
6
Grants 6
Waiting 0
Maximum 5922
Available 2389

Now I am getting the following error
2006-10-23 14:34:20.91 spid904 BPool::Map: no remappable address
found.
2006-10-23 14:34:20.94 spid465 BPool::Map: no remappable address
found.
2006-10-23 14:34:20.94 spid62 AWE mapping status:
2006-10-23 14:34:20.94 spid62 There are 200408 pages in the AWE
window
2006-10-23 14:34:20.94 spid62 193325 pages have a bstat of 000000
2006-10-23 14:34:20.94 spid62 3043 pages have a bstat of 00000b
2006-10-23 14:34:20.94 spid62 2844 pages have a bstat of 000009
2006-10-23 14:34:20.94 spid62 633 pages have a bstat of 000020
2006-10-23 14:34:20.94 spid62 563 pages have a bstat of 001001
2006-10-23 14:34:20.94 spid62 BPool::Map: no remappable address
found.
2006-10-23 14:34:20.96 spid530 BPool::Map: no remappable address
found.
2006-10-23 14:34:20.97 spid240 BPool::Map: no remappable address
found.
2006-10-23 14:34:20.99 spid275 BPool::Map: no remappable address
found.
2006-10-23 14:34:21.02 spid465 BPool::Map: no remappable address
found.

System is configured with AWE and 6.5 GB to SQL Server. Total Mem: 8 GB


Questions

1. I see QueryPlan very high . What is the difference between QueryPlan
and Procedures Counter . My experiment indicates QueryPlan Value is
always greater than Procedures . Is it correct ? Can Some one explain
query plan correctly . It is confusing from the MS Article

2. I suspect QueryPlan counter is high ? Is the problem is in
BufferPool or MemtoLeave ?

3. Statements executed mostly are prepared statements

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