AppDomain 245 (mssqlsystemresource.sys[runtime].262) unloaded. A significant part of sql server process memory has been paged out.


hi all,

info:
1. virtual machine
2. there 64gb physical memory
3. sql server 2008 r2 on windows server 2008

there tens of thousands of following errors in error log:

appdomain 245 (mssqlsystemresource.sys[runtime].262) unloaded.
a significant part of sql server process memory has been paged out. may result in performance degradation. duration: 327 seconds. working set (kb): 9819232, committed (kb): 20354456, memory utilization: 48%.

checked following query , got:
-- physical_memory_in_use_gb stands physical memory sql server uses
select physical_memory_in_use_kb/(1024) physical_memory_in_use_mb
    ,virtual_address_space_committed_kb/(1024) virtual_address_space_committed_mb
sys.dm_os_process_memory

physical_memory_in_use_mb    virtual_address_space_committed_mb
10972    20199

checked sys.configurations:

object_name    counter_name    instance_name    cntr_value
sqlserver:memory manager                                                                                                            target server memory (kb)                                                                                                                                                                                                                                               33136576
sqlserver:memory manager                                                                                                            total server memory (kb)                                                                                                                                                                                                                                                16764872

select * sys.dm_os_memory_clerks
[type] = 'memoryclerk_sqlclr'


memory_clerk_address    type    name    memory_node_id    single_pages_kb    multi_pages_kb    virtual_memory_reserved_kb    virtual_memory_committed_kb    awe_allocated_kb    shared_memory_reserved_kb    shared_memory_committed_kb    page_size_bytes    page_allocator_address    host_address
0x000000000077e3b8    memoryclerk_sqlclr    default    1    4520    79864    12628988    1222224    0    0    0    8192    0x000000000077e3f8    0x0000000000000000
0x000000000577e3b8    memoryclerk_sqlclr    default    0    0    0    0    0    0    0    0    8192    0x000000000577e3f8    0x0000000000000000
0x000000000865e3b8    memoryclerk_sqlclr    default    2    0    0    0    0    0    0    0    8192    0x000000000865e3f8    0x0000000000000000
0x00000000090ce3b8    memoryclerk_sqlclr    default    3    0    0    0    0    0    0    0    8192    0x00000000090ce3f8    0x0000000000000000

/*strange: there 1 clerk memory allocation.*/

how think issue, , think need check.

thanks

give me permission, i'll it.

applying sp3 should top priority atleast extended support. yes memory bugs fixed in sp release , not hitting 1 of means apply sp when face issue , server down sure not correct approach. consider scenario prod down , face huge data loss db not running go ms , hey product not working , faced loss sue you.....you cannot cannot claim support microsoft in legal way because running unsupported version why suggested apply sp3 atl east extended support.

yes should enable lpim.

>appdomain 245 (mssqlsystemresource.sys[runtime].262) unloaded.

please note not error message per se. happened because of paging , when paging reduced such messages not come. if comes once or twice can ignored. please read article bob dorr understand message. memory sqlclr allocated outside buffer pool , when paging happens memory decreases lot , forcing app domains unloaded , got message. such messages when use spatial,geo data types or sqlclr

please mark reply answer if solved issue or vote helpful if helped other forum members can benefit

my wiki articles
mvp




SQL Server  >  SQL Server Database Engine



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