查询计划未保留内存不足错误

Question

查询计划未保留内存不足错误

Mil*_*rdo 6 sql-server-2005 memory execution-plan

我们一直遇到 SQL Server 的内存问题。

当我们开始出现超时和登录错误时，我们首先意识到我们遇到了问题：

已成功与服务器建立连接，但随后在登录过程中出现错误。（提供者：TCP 提供者，错误：0 - 指定的网络名称不再可用。）

在我们的 sqlbox 上查看事件查看器，我们注意到大量内存不足错误：

系统内存不足，无法运行此查询。
有关详细信息，请参阅http://go.microsoft.com/fwlink/events.asp 上的帮助和支持中心。

在此之前唯一的即时警告是以下消息：

AppDomain 119 (Alerts.dbo[runtime].118) 已卸载。

在此之前大约 20 分钟，我们收到了许多与性能相关的消息和错误：

信息：
此计算机上的 Microsoft Operations Manager 代理从其 MOM 服务器收到新规则和配置设置。管理组：GGC

警告：
“ASP”服务的性能库“C:\WINDOWS\system32\aspperf.dll”的配置信息与存储在注册表中的可信性能库信息不匹配。此库中的函数不会被视为受信任的。

错误：
Microsoft Operations Manager 性能提供程序无法访问计算机上的性能计数器等等。Microsoft Operations Manager 不会监视这台计算机上的性能计数器，直到它们可用。

信息：
Microsoft Operations Manager 在上次失败后成功加载了计算机上的性能计数器，并将开始监视它们。

我怀疑上面的性能警报/错误与两个小时的“内存不足异常”有什么关系，但为了以防万一，我已经包含了这些消息。

最后，经过两个小时的红色内存错误后，以下信息消息预示着内存不足警报的结束：

由于“DBCC FREEPROCCACHE”或“DBCC FREESYSTEMCACHE”操作，SQL Server 遇到了 2 次出现“绑定树”缓存存储（计划缓存的一部分）的缓存存储刷新。

所以我们的 DBA 在某个时候调用了 freeprocache。尽管最终修复了内存不足的异常，我们注意到我们的执行计划仍然没有被存储。这个“问题”现在已经持续了整整 3 天，这意味着使用具有复杂计划的查询的应用程序面临着严重的性能困难。在某些情况下，计划开始再次被采用，但它们不会在缓存中停留很长时间。

我想知道是否有人可以帮助确定关注的领域。

A 部分代表查询计划被保留时的系统（计划被保留，但只保留一个小时左右），B 部分代表计划根本没有被缓存（检查 dm_exec_query_stats）

甲部

DBCC MemoryStatus 结果：

Memory Manager   KB 
VM Reserved 1828768
VM Committed    269928
AWE Allocated   13762560
Reserved Memory 1024
Reserved Memory In Use  0

Memory node Id = 0   KB 
VM Reserved 1824608
VM Committed    265920
AWE Allocated   13762560
MultiPage Allocator 50776
SinglePage Allocator    656568

 MEMORYCLERK_SQLGENERAL (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   14672
 MultiPage Allocator    11144

MEMORYCLERK_SQLBUFFERPOOL (Total)    KB 
 VM Reserved    1620024
 VM Committed   137272
 AWE Allocated  13762560
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   0
 MultiPage Allocator    3624

MEMORYCLERK_SQLQUERYEXEC (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   80
 MultiPage Allocator    32

MEMORYCLERK_SQLOPTIMIZER (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   5568
 MultiPage Allocator    88

MEMORYCLERK_SQLUTILITIES (Total)     KB 
 VM Reserved    360
 VM Committed   360
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   664
 MultiPage Allocator    0

MEMORYCLERK_SQLSTORENG (Total)   KB 
 VM Reserved    17792
 VM Committed   17792
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   11200
 MultiPage Allocator    13040

MEMORYCLERK_SQLCONNECTIONPOOL (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   4504
 MultiPage Allocator    0

MEMORYCLERK_SQLCLR (Total)   KB 
 VM Reserved    126336
 VM Committed   54816
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   1296
 MultiPage Allocator    2872

MEMORYCLERK_SQLSERVICEBROKER (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   176
 MultiPage Allocator    192

MEMORYCLERK_SQLHTTP (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

MEMORYCLERK_SNI (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   432
 MultiPage Allocator    16

MEMORYCLERK_FULLTEXT (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

MEMORYCLERK_SQLXP (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

MEMORYCLERK_BHF (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   720
 MultiPage Allocator    0

MEMORYCLERK_SQLQERESERVATIONS (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   37896
 MultiPage Allocator    0

MEMORYCLERK_HOST (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   224
 MultiPage Allocator    96

MEMORYCLERK_SOSNODE (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16008
 MultiPage Allocator    9136

CACHESTORE_OBJCP (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   297080
 MultiPage Allocator    4448

CACHESTORE_PHDR (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16400
 MultiPage Allocator    0

CACHESTORE_XPROC (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   112
 MultiPage Allocator    0

CACHESTORE_TEMPTABLES (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   48
 MultiPage Allocator    0

CACHESTORE_NOTIF (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_VIEWDEFINITIONS (Total)   KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_XMLDBTYPE (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_XMLDBELEMENT (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_XMLDBATTRIBUTE (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_STACKFRAMES (Total)   KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   0
 MultiPage Allocator    8

CACHESTORE_BROKERTBLACS (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   296
 MultiPage Allocator    0

CACHESTORE_BROKERKEK (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERDSH (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERUSERCERTLOOKUP (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERRSB (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERREADONLY (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   32
 MultiPage Allocator    0

CACHESTORE_BROKERTO (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_EVENTS (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_SYSTEMROWSET (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   3104
 MultiPage Allocator    0

USERSTORE_SCHEMAMGR (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   9592
 MultiPage Allocator    144

USERSTORE_DBMETADATA (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   6800
 MultiPage Allocator    0

USERSTORE_TOKENPERM (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   752
 MultiPage Allocator    0

USERSTORE_OBJPERM (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   6072
 MultiPage Allocator    0

USERSTORE_SXC (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   2232
 MultiPage Allocator    0

OBJECTSTORE_LBSS (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   472
 MultiPage Allocator    0

OBJECTSTORE_SNI_PACKET (Total)   KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   7640
 MultiPage Allocator    48

OBJECTSTORE_SERVICE_BROKER (Total)   KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   256
 MultiPage Allocator    0

OBJECTSTORE_LOCK_MANAGER (Total)     KB 
 VM Reserved    4096
 VM Committed   4096
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   2584
 MultiPage Allocator    0

Buffer Distribution Buffers
Stolen  11432
Free    283
Cached  75066
Database (clean)    1609444
Database (dirty)    24091
I/O 0
Latched 4

Buffer Counts   Buffers
Committed   1720320
Target  1720320
Hashed  1633540
Stolen Potential    89382
External Reservation    308
Min Free    712
Visible 185344
Available Paging File   2268071

Procedure Cache Value
TotalProcs  6240
TotalPages  71392
InUsePages  407

Global Memory Objects   Buffers
Resource    1127
Locks   326
XDES    204
SETLS   8
SE Dataset Allocators   16
SubpDesc Allocators 8
SE SchemaManager    1194
SQLCache    749
Replication 126
ServerGlobal    27
XP Global   2
SortTables  1523

Query Memory Objects    Value
Grants  2
Waiting 0
Available (Buffers) 78932
Maximum (Buffers)   83833
Limit   83833
Next Request    0
Waiting For 0
Cost    0
Timeout 0
Wait Time   0
Last Target 88245

Small Query Memory Objects  Value
Grants  0
Waiting 0
Available (Buffers) 4410
Maximum (Buffers)   4410
Limit   4410

Optimization Queue  Value
Overall Memory  1216954368
Target Memory   556490752
Last Notification   1
Timeout 6
Early Termination Factor    5

Small Gateway   Value
Configured Units    32
Available Units 32
Acquires    0
Waiters 0
Threshold Factor    250000
Threshold   250000

Medium Gateway  Value
Configured Units    8
Available Units 8
Acquires    0
Waiters 0
Threshold Factor    12

Big Gateway Value
Configured Units    1
Available Units 1
Acquires    0
Waiters 0
Threshold Factor    8

MEMORYBROKER_FOR_CACHE  Value
Allocations 75056
Rate    15
Target Allocations  136125
Future Allocations  0
Last Notification   1

MEMORYBROKER_FOR_STEAL  Value
Allocations 6869
Rate    8
Target Allocations  67931
Future Allocations  0
Last Notification   1

MEMORYBROKER_FOR_RESERVE    Value
Allocations 4737
Rate    1844
Target Allocations  94128
Future Allocations  33074
Last Notification   1

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可用内存和最大空闲连续块：

Total avail Mem, KB   Max free size, KB
17828                  4148

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B部分：

DBCC 内存状态

Memory Manager   KB 
VM Reserved 1823056
VM Committed    264192
AWE Allocated   13762560
Reserved Memory 1024
Reserved Memory In Use  0

Memory node Id = 0   KB 
VM Reserved 1818896
VM Committed    260184
AWE Allocated   13762560
MultiPage Allocator 41672
SinglePage Allocator    90880

MEMORYCLERK_SQLGENERAL (Total)   KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   9456
 MultiPage Allocator    12416

MEMORYCLERK_SQLBUFFERPOOL (Total)    KB 
 VM Reserved    1620024
 VM Committed   137272
 AWE Allocated  13762560
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   0
 MultiPage Allocator    3624

MEMORYCLERK_SQLQUERYEXEC (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   88
 MultiPage Allocator    0

MEMORYCLERK_SQLOPTIMIZER (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   11344
 MultiPage Allocator    88

MEMORYCLERK_SQLUTILITIES (Total)     KB 
 VM Reserved    600
 VM Committed   600
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   672
 MultiPage Allocator    0

MEMORYCLERK_SQLSTORENG (Total)   KB 
 VM Reserved    17856
 VM Committed   17856
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   11408
 MultiPage Allocator    13040

MEMORYCLERK_SQLCONNECTIONPOOL (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   2648
 MultiPage Allocator    0

MEMORYCLERK_SQLCLR (Total)   KB 
 VM Reserved    126336
 VM Committed   54816
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   1296
 MultiPage Allocator    2872

MEMORYCLERK_SQLSERVICEBROKER (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   184
 MultiPage Allocator    192

MEMORYCLERK_SQLHTTP (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

MEMORYCLERK_SNI (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   488
 MultiPage Allocator    16

MEMORYCLERK_FULLTEXT (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

MEMORYCLERK_SQLXP (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

MEMORYCLERK_QSRANGEPREFETCH (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   392
 MultiPage Allocator    0

MEMORYCLERK_BHF (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   456
 MultiPage Allocator    0

MEMORYCLERK_SQLQERESERVATIONS (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   21512
 MultiPage Allocator    0

MEMORYCLERK_HOST (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   224
 MultiPage Allocator    96

MEMORYCLERK_SOSNODE (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   14904
 MultiPage Allocator    8992

CACHESTORE_OBJCP (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   3816
 MultiPage Allocator    0

CACHESTORE_SQLCP (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   328
 MultiPage Allocator    0

CACHESTORE_PHDR (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   1760
 MultiPage Allocator    0

CACHESTORE_XPROC (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_TEMPTABLES (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_NOTIF (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_VIEWDEFINITIONS (Total)   KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_XMLDBTYPE (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_XMLDBELEMENT (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_XMLDBATTRIBUTE (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_STACKFRAMES (Total)   KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   0
 MultiPage Allocator    8

CACHESTORE_BROKERTBLACS (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   304
 MultiPage Allocator    0

CACHESTORE_BROKERKEK (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERDSH (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERUSERCERTLOOKUP (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERRSB (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_BROKERREADONLY (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   32
 MultiPage Allocator    0

CACHESTORE_BROKERTO (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   8
 MultiPage Allocator    0

CACHESTORE_EVENTS (Total)    KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   16
 MultiPage Allocator    0

CACHESTORE_SYSTEMROWSET (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   744
 MultiPage Allocator    0

USERSTORE_SCHEMAMGR (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   9560
 MultiPage Allocator    144

USERSTORE_DBMETADATA (Total)     KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   2960
 MultiPage Allocator    0

USERSTORE_TOKENPERM (Total)  KB 
 VM Reserved    0
 VM Committed   0
 AWE Allocated  0
 SM Reserved    0
 SM Commited    0
 SinglePage Allocator   1064
 MultiPage Allocator    0

USERSTORE_OBJPERM (Total)    KB 
 VM Reserved    0
 VM

Answer 1

Jam*_*olt 8

我猜您发布的“剩余内存”输出来自 Christian Bolton 的VAS 使用分析脚本。那是对的吗？如果是这样，您在该memtoleave区域中只有 17-18 MB 可用空间，这可能会在某些时候导致问题，并可能导致您粘贴的所有或大部分错误消息。

这从乔纳森Kehayias查询这里会给你什么是在使用内存的想法memtoleave区域：

SELECT type, virtual_memory_committed_kb, multi_pages_kb 
FROM sys.dm_os_memory_clerks 
WHERE virtual_memory_committed_kb > 0 OR multi_pages_kb > 0

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帖子也解释的memtoleave很好。

您询问的缓存大小是否有问题取决于许多因素。由于这是一个 32 位实例，需要考虑的更相关的事情之一是这些缓存的分配是使用单页分配器（使用缓冲池）还是多页分配器（在 SQL 之前）进行分配Server 2012 不使用缓冲池，而是消耗该memtoleave区域的内存。您有大约 13 GB 分配给缓冲池，因此分配给这个或那个的几百 MB 不一定会导致问题。但是，该memtoleave区域中的几百 MB足以导致您列出的一些错误。

Kehayias 的帖子解释了这些概念以及解决问题的选项（如果确实memtoleave很累的话）。

我将主要关注什么使该memtoleave区域处于饥饿状态，以及 Windows 中的整体内存可用性如何，以及 SQL Server 中内存可用性的一般度量，例如页面预期寿命。

我还会考虑这个问题是否有助于为迁移到 64 位版本的 SQL Server 提供商业案例，因为这可以避免memtoleave问题，除非整个服务器只是内存不足。在 64 位版本上，了解和管理 SQL Server 的内存使用情况要简单得多，尤其是在 SQL Server 2012 上，所有分配都通过缓冲池进行。您可能还需要考虑应用 SP4，因为 SP3 中存在许多已知错误。

Answer 2

mrd*_*nny 5

您正在运行 32 位版本的 SQL Server。无论您做什么，执行计划缓存所能拥有的最大内存都是 1 Gig。升级到 64 位机器对于解决您的问题至关重要。

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