Çóoracle¿âÀïµÄ±í½á¹¹µ¼µ½PDÈí¼þÖеķ½·¨£¿£¿£¿£¿
СµÜ×î½üÔÚʹÓÃPD,ÎÒÏÖÔÚÓõÄÊÇoracleÊý¾Ý¿â£¬¿âÀïµÄ±íÔç¾ÍÒѾ½¨ºÃÁË£¬
ÎÒÏÖÔÚÊÇÏëÓÐûÓÐʲô·½·¨£¬°Ñoracle¿âÀïµÄ±í½á¹¹µ¼µ½PDÈí¼þÖС£
ÓÃPDÁ¬½ÓÄ¿±êÊý¾Ý¿â£¬È»ºó¶ÔÊý¾Ý¿â½øÐÐÄæ¹¤³Ì¡£
лл¥ÉϵÄÐֵܣ¬ÎÒÈ¥ÊÔÊÔ£¡
PDÒѾÁ¬½ÓÉÏÁËÄ¿±êÊý¾Ý¿â£¬½ÓÏÂÀ´ÐèÒªÔõôÑù×ö²ÅÄܵ¼Èë±í½á¹¹£¡
ÖÕÓÚÕÒµ½ÁË£¬Ð»Ð»Â¥ÉϵÄÐֵܣ¡
Ïà¹ØÎÊ´ð£º
´ó¼ÒºÃ,ÎÒÏÖÔÚ°Ñoracle·þÎñÆ÷ÉÏÃæµÄÔʼÎļþ,ÏÂÔØµ½±¾»úÁË.ÎÒÏëÔÚ±¾»ú·ÃÎÊÊý¾Ý¿âÔõôÉèÖð¡.ÊDz»ÊÇÀàËÆ¿ÉÒÔ½¨Á¢Ò»¸öʲôÐéÄâ·þÎñÆ÷À´ÊµÏÖ.Çë´ó¼Ò³ö³öÖ÷Òâ
ÒýÓÃ
´ó¼ÒºÃ,ÎÒÏÖÔÚ°Ñoracle·þÎñÆ÷ÉÏÃæ ......
ÔÚϵͳÔËÐеÄʱºò×ÜÊÇÓÐÒ»¿é´ÅÅÌʼÖÕÉÁºìµÆ£¬½øÈëϵͳºó
#topas²é¿´×ÜÊÇÓÐÒ»¿é´ÅÅÌ%BUSYΪ90%ÒÔÉÏ£¬
Êý¾Ý¿â°æ±¾£ºoracle 9.2.0.7
Êý¾ÝÎļþ¹ÒÔØµÄ½Úµã£º/oradata/pcs/ Âß¼¾íºÅlv04
#lslv -l lv04
......
СµÜ£¬×î½üҪתÐÐÈ¥×öoracle¿ª·¢ÁË£¬ÓÉÓÚ´óѧ±Ïҵʱ£¬×ßÁ˸öÍä·£¬ÏÖÔÚºÜСÐÄ£¬ÎÊÏ£¬×öPL/SQLÓÐûÓÐǰ;£¿£¿£¿
µ±È»ÎÒ˵µÄÕâ¸öǰ;ÊÇÖ¸ ÒÔºóÒªÌø²Û£¬Êг¡¶ÔÕâÑùµÄÈ˲ŵÄÐèÇóÁ¿´ó²»´ó£¿£¿
3q ÄÇ¿´À´»¹Ö»ÄÜÏȽӴ ......
select sum£¨a.t)from ta a group by ta.a,ÕâÌõÓï¾ä½«±ítaÖеÄÊý¾Ý°´ÕÕa×ֶηÖ×é»ã×Üt×ֶΡ£
½á¹û±ÈÈ磺
3 30
4 50
ÎÒÏëµÃµ½Õâ¸ö½á¹û£º
1 0
2 0
3 30
4 50
5 0
Õâ¸ö½á¹û£¬ÇëÎÊsqlÓï¾äÔõôд£¿¶àл
nobody ......
²é¿´ÊÂÎñ¸ôÀë¼¶±ðµÄÃüÁ
MySQLʹÓõÄÊÇselect @@tx_isolation;
ÔÚOracleÖв鿴ÊÂÎñ¸ôÀë¼¶±ðµÄÃüÁîÊÇÄĸö£¿
SQL code:
SELECT /*+ rule */ s.username,decode(l.type,'TM','TABLE LOCK','TX','ROW LOCK', ......