摘要:
在12c以后rac 更换存储,不用在使用add 和 drop 磁盘,用replace命令替换上述2条命令 ALTER DISKGROUP data2 REPLACE DISK diskc7 WITH '/devices/diskc18' POWER 3; 阅读全文
摘要:
第一种 UPDATE yz.T1 a SET a.object_name = (select b.object_name from yz.t2 b where a.object_id = b.object_id) WHERE EXISTS (SELECT 1 FROM yz.t2 b WHERE b 阅读全文