Rreplication 性能差（转储200万门诊处方zjysb012）

ETLDB性能差（HIS转储200万门诊处方zjysb012）

解决方法：

1.禁用cdc.Hismz_capture

2.停止cdc.Hismz_capture

3.关闭zjysb012，zjysb012 CDC功能

4.启用cdc.Hismz_capture

5.开始：cdc.Hismz_capture

6.开启zjysb012，zjysb012 CDC功能

7.手工执行zjysb012  表的更新操作产生新的cdc，进行自动补录三天数据

（命令：Update zjysb012   set softbbh=' ' where rq>'2016-8-22' and rq<'2016-8-25 18:00'）

2016-8-24 HISMZ 性能严重，8月23日早上6点后的数据未到ETLDB

 

 

在发布服务器到代理服务器的参数中增加红色部分参数，调用多线程 CPU处理当前作业遇到的问题，2个小时内性能问题得到解决（同时停掉了CDRDB抽取ETLDB的业务）

-Publisher DSCNX -PublisherDB [Hismz] -Publication [Pub_HISMZ] -Distributor [ETLDB] -SubscriptionType 1 -Subscriber [ETLDB] -SubscriberSecurityMode 1 -SubscriberDB [Hismz]    -Continuous -SubscriptionStreams 16 -CommitBatchSize 1000 -CommitBatchThreshold 1000

select * from sys.databases where  name='hismz'

--log reuse wait  replication

sp_readerrorlog

sp_cdc_help_jobs

SELECT s.name AS Schema_Name, tb.name AS Table_Name

, tb.object_id, tb.type, tb.type_desc, tb.is_tracked_by_cdc

FROM sys.tables tb

INNER JOIN sys.schemas s on s.schema_id = tb.schema_id

WHERE tb.is_tracked_by_cdc = 1 and tb.name='zjysb012'

Select * from sys.dm_cdc_log_scan_sessions

select * from sys.sysprocesses where spid = 340

select * from sys.sysprocesses where spid = 359

SELECT *  FROM msdb.dbo.cdc_jobs

select db_id('hismz')

use hismz

dbcc opentran

EXECUTE sys.sp_cdc_change_job

@job_type = N'capture',

@maxscans = 10,

@maxtrans = 1000;

GO

/****** Script for SelectTopNRows command from SSMS  ******/

SELECT TOP 1000 [start_lsn]

,[tran_begin_time]

,[tran_end_time]

,[tran_id]

,[tran_begin_lsn]

FROM [Hismz].[cdc].[lsn_time_mapping]

order by [tran_begin_time] desc

select * from sys.sysprocesses where spid = 328

use hismz

Select * from sys.dm_cdc_log_scan_sessions

select * from sys.sysprocesses where  spid  > 50 and dbid = 5 and program_name like '%sqlagent%'

select * from sys.dm_exec_requests where session_id = 153

         Declare @cc varchar(max)

select @cc = text from sys.dm_exec_sql_text (0x030005005401BF3C1422FF003BA5000001000000)

select substring (@cc, 78718/2 + 1,125150/2 +1 ),len(@cc)

 

可查询日志中执行的具体脚本。

sp_repltrans

--zjysb012ls

EXEC sys.sp_cdc_disable_table

@source_schema = N'dbo',

@source_name   = N'zjysb012ls',

@capture_instance = N'dbo_zjysb012ls'

GO

EXEC sys.sp_cdc_disable_table

@source_schema = N'dbo',

@source_name   = N'zjysb012',

@capture_instance = N'dbo_zjysb012'

GO

/****** Script for SelectTopNRows command from SSMS  ******/

SELECT TOP 1000 [start_lsn]

,[tran_begin_time]

,[tran_end_time]

,[tran_id]

,[tran_begin_lsn]

FROM [Hismz].[cdc].[lsn_time_mapping]

order by [tran_begin_time] desc

select * from sys.sysprocesses where spid = 328

use hismz

Select * from sys.dm_cdc_log_scan_sessions

select * from sys.sysprocesses where  spid  > 50 and dbid = 5 and program_name like '%sqlagent%'

select * from sys.dm_exec_requests where session_id = 153

Declare @cc varchar(max)

select @cc = text from sys.dm_exec_sql_text (0x030005005401BF3C1422FF003BA5000001000000)

select substring (@cc, 78718/2 + 1,125150/2 +1 ),len(@cc)

sp_repltrans

--zjysb012ls

EXEC sys.sp_cdc_disable_table

@source_schema = N'dbo',

@source_name   = N'zjysb012ls',

@capture_instance = N'dbo_zjysb012ls'

GO

EXEC sys.sp_cdc_disable_table

@source_schema = N'dbo',

@source_name   = N'zjysb012',

@capture_instance = N'dbo_zjysb012'

GO

EXEC sys.sp_cdc_enable_table

@source_schema= 'dbo' --架构名

,@source_name = 'zjysb012' --启用CDC的表名

,@role_name = NULL --必须字段,默认值

,@supports_net_changes = 1 --启用净变更

,@index_name = N'pk_ZJYSB012_IDKEYGUID'--主键名[]

GO