oracle和sqlserver查询时阻塞情况
1.oracle环境
create table test
(
id number(4),
name varchar2(20)
)
在一个session中
insert into test values(1,'aa');
在另一个session中
select * from test1;
查询没被阻塞
2.sqlserver环境
在一个session中
insert into test values(1,'aa');
在另一个session中
select * from test1;
查询被阻塞(实际上前一个session在update或delete时均会阻塞本次查询,当然,如果加上with (nolock),也不会被阻塞)
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sql> alter system switch logfile;
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3.adding online redo log groups
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sql> ('/disk3/log4a.rdo','/disk4/lo ......
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sp_QueryPaging
set ANSI_NULLS ON
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-- =============================================
-- Author:
-- Create date:
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