[英]SQL SERVER 2016 SLOW INSERT
插入块时,插入开始的速度非常快(1秒内为3000),但是随着时间的流逝,总共8百万条记录中的每3千条插入会花费60-70秒。
有人知道我可以进行审查:到目前为止,我们已经验证了自动增长功能,它会在磁盘级别,内存上进行检查并处理任何增加的值以发出警报。 它是VM Ware虚拟服务器,Sql Server 2016 Enterprise。
您能帮我吗,但我可以检查BDD,存储和服务器的所有配置。
table_data_tmp 800万个表标识(用于检索)并包含索引data_table_tmp1 800万个table_data_tmp1_2 3百万条记录tabla_datos_fin 19,000,000 30GB-在此处插入时插入时间很慢
附加脚本仅作为参考,因为已经确定在插入到最终表中是每次经过都要插入的位置
IF EXISTS (SELECT 1 FROM SYS.INDEXES WHERE OBJECT_ID = OBJECT_ID( 'tabla_datos_fin') AND NAME = 'IX_tabla_datos_fin_TIP_IDE_1' AND IS_DISABLED =0)
ALTER INDEX IX_tabla_datos_fin_TIP_IDE_1 ON tabla_datos_fin DISABLE;
GO
TRUNCATE TABLE tabla_datos_tmp
IF EXISTS (SELECT 1 FROM SYS.INDEXES WHERE OBJECT_ID = OBJECT_ID( 'IDX_tabla_datos_tmp') AND NAME = 'tabla_datos_tmp')
DROP INDEX tabla_datos_tmp.IDX_tabla_datos_tmp
GO
INSERT INTO tabla_datos_tmp (campos)
SELECT *
FROM [tabla_datos_tmp1]
CREATE INDEX IDX_tabla_datos_tmp ON tabla_datos_tmp (CONTROL_INT) INCLUDE (all campos)
DECLARE
@batchsize INT,
@ctr INT,
@rc INT,
@val_ini int,
@val_fin int
SELECT
@batchsize = 3000,
@ctr = 0;
WHILE 1 = 1
BEGIN
set @val_ini = @batchsize * @ctr
set @val_fin = @batchsize * (@ctr + 1)
truncate table tabla_datos_tmp1_2
INSERT INTO tabla_datos_tmp1_2
(all campos)
SELECT*
FROM tabla_datos_tmp WITH (INDEX =IDX_tabla_datos_tmp )
WHERE CONTROL_INT > @VAL_INI
AND CONTROL_INT <= @VAL_FIN
UPDATE tabla_datos_tmp1_2 SET FECHA_ULTIMA_ACTUALIZACION= GETDATE ()
/* INSERTION IS DELAYED HERE */
INSERT INTO tabla_datos_fin (al campos)
SELECT *
FROM tabla_datos_tmp1_2
/**********************/
DELETE A
FROM tabla_datos_tmp A WITH (INDEX =IDX_tabla_datos_tmp )
WHERE CONTROL_INT > @VAL_INI AND CONTROL_INT <= @VAL_FIN
IF @@ROWCOUNT = 0
BREAK;
SET @ctr = @ctr + 1;
PRINT @ctr
END
IF EXISTS (SELECT 1 FROM SYS.INDEXES WHERE OBJECT_ID = OBJECT_ID( 'tabla_datos_fin') AND NAME = 'IX_tabla_datos_fin' AND IS_DISABLED =1)
ALTER INDEX IX_tabla_datos_fin ON tabla_datos_fin REBUILD;
GO
IF EXISTS (SELECT 1 FROM SYS.INDEXES WHERE OBJECT_ID = OBJECT_ID( 'tabla_datos_fin') AND NAME = 'IX_tabla_datos_fin_TIP_IDE_1' AND IS_DISABLED =1)
ALTER INDEX IX_tabla_datos_fin_TIP_IDE_1 ON tabla_datos_fin REBUILD;
GO
使用sql server等待统计信息来查看sql正在等待什么。 找到这些之后,请深入研究其他性能计数器,直到找到问题为止。 我的猜测是您的磁盘无法跟上。
https://www.sqlskills.com/blogs/paul/wait-statistics-or-please-tell-me-where-it-hurts/
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