sql ±¸·ÝºÍɾ³ý
±¸·Ý
DECLARE @strPath NVARCHAR(200)
set @strPath = convert(NVARCHAR,getdate(),120)
set @strPath='hq'+rtrim(left(replace(@strPath,'-',''),8))
set @strPath = 'D:\sqlback\mydb\' + @strPath + '.bak'
BACKUP DATABASE [mydb] TO DISK = @strPath WITH NOFORMAT, NOINIT, NAME = N'mydb-ÍêÕû Êý¾Ý¿â ±¸·Ý', SKIP, NOREWIND, NOUNLOAD, STATS = 10
GO
ɾ³ý
declare @date nvarchar(20)
set @date=convert(nvarchar,dateadd(d,-1,getdate()),120)
EXECUTE master.dbo.xp_delete_file 0,N'D:\sqlback\mydb',N'bak',@date
Ïà¹ØÎĵµ£º
ÆäʵÔÚÐÞ¸ÄÊý¾Ý¿âÃû³Æ֮ǰ£¬Èç¹ûÓÐÓû§Á¬½Óµ½Êý¾Ý¿âµÄ»°»áÔì³ÉÊý¾Ý¿âÖØÃüÃûʧ°Ü£¬¿ÉÒÔÏÈÖ´ÐÐ
select spid
from master.dbo.sysprocesses
where dbid=db_id('OldDbName')
½á¹û¼¯ÖÐÏÔʾµÄÊǵ±Ç°Á¬½Óµ½Êý¾Ý¿âOldDbNameµÄÁ¬½Ó
±ÈÈç½á¹ûÊÇ
79
81
µ±È»£¬Êµ¼ÊÖµÓ¦¸Ã²»ÊÇÕâÁ½¸ö
È»ºóÖ´ÐÐ
kill 79
kill 81
¹Ø±ÕÒѽ¨Á¢ ......
½â¾ö·½·¨...
¹ØÓÚSQL°²×°±»¹ÒÆðµÄÐÞ¸´´ó¼Ò¿ÉÄܶ¼Óöµ½¹ýµ±SQL±»É¾³ýºóÐèÒªÖØа²×°Ê±£¬½øÈë°²×°½çÃæ¾Í»á³öÏÖSQL´íÎóÌáʾ£º
´ÓÇ°µÄ°²×°³ÌÐò²Ù×÷ʹ°²×°³ÌÐò²Ù×÷¹ÒÆð£¬ÐèÒªÖØÐÂÆô¶¯¼ÆËã»ú
È»¶øÕâЩ¶¼Êǰ׷Ѿ¢£¬²»¹ÜÄãÖØÐÂÆô¶¯¶àÉÙ´ÎÒ²¶¼ÎÞ¼ÃÓÚÊ£¬ÏÂÃæÎҾͽ²½²ÔõÑùÄܹ»½â³ý°²×°»òÉý¼¶Ê±Îļþ±»¹ÒÆðµÄ²Ù×÷¡£
µã»÷ ¿ ......
ÔÚÎÒÃǵÄÈÕ³£±à³ÌÖУ¬Êý¾Ý¿âµÄ³ÌÐò»ù±¾É϶¼ÒªÓëSQLÓï¾ä´ò½»µÀ£¬SQLÓï¾äµÄ±àд²»¿É±ÜÃâµÄ³ÉΪһ¸öÍ·Ì۵Ť×÷¡£ÇÒÒòΪSQLÓï¾äÊÇSTRINGÀàÐÍ£¬Òò´ËÔÚ±àÒë½×¶Î²é²»³ö´í£¬Ö»Óе½ÔËÐÐʱ²ÅÄÜ·¢ÏÖ´íÎó¡£
±¾ÎĵĽâ¾ö·½°¸£¬Í¨¹ý×Ô¶¯Éú³ÉSQLÓï¾ä£¬ÔÚÒ»¶¨³Ì¶ÈÉϽµµÍ³ö´íµÄ¸ÅÂÊ£¬´Ó¶øÌá¸ß±à³ÌЧÂÊ¡£ public int ......
ORACLE sql µÄ´¦Àí¹ý³Ì´óÖÂÈçÏ£º
1.ÔËÓÃHASHËã·¨£¬µÃµ½Ò»¸öHASHÖµ£¬Õâ¸öÖµ¿ÉÒÔͨ¹ýV$SQLAREA.HASH_VALUE ²é¿´
2.µ½shared pool ÖÐµÄ library cache ÖвéÕÒÊÇ·ñÓÐÏàͬµÄHASHÖµ£¬Èç¹û´æÔÚ£¬ÔòÎÞÐèÓ²½âÎö£¬½øÐÐÈí½âÎö
3.Èç¹ûshared pool²»´æÔÚ´ËHASHÖµ£¬Ôò½øÐÐÓï·¨¼ì²é£¬²é¿´ÊÇ·ñÓÐÓï·¨´íÎó
&nbs ......