Oracle 删除用户和表空间
Oracle 使用时间长了, 新增了许多user 和tablespace. 需要清理一下
Oracle 使用时间长了, 新增了许多user 和tablespace. 需要清理一下
对于单个user和tablespace 来说, 可以使用如下命令来完成。
步骤一: 删除user
drop user ×× cascade
说明: 删除了user,只是删除了该user下的schema objects,是不会删除相应的tablespace的。
步骤二: 删除tablespace
DROP TABLESPACE tablespace_name INCLUDING CONTENTS AND DATAFILES;
但是,因为是供开发环境来使用的db, 需要清理的user 和 table space 很多。
思路一:
Export出DB中所有的user和tablespace, 筛选出系统的和有用的tablespace,把有用的信息load到一张表中去。
然后写例程循环,把不在有用表的tablespace删掉
1. select username,default_tablespace from dba_users;
2.
create table MTUSEFULSPACE
(
ID Number(4) NOT NULL PRIMARY KEY,
USERNAME varchar2(30),
TABLESPACENAME varchar2(60),
OWNERNAME varchar2(30)
);
3.
declare icount number(2);
tempspace varchar2(60);
begin
for curTable in (select username as allusr,default_tablespace as alltblspace from dba_users)
loop
tempspace :=curTable.alltblspace;
dbms_output.put_line(tempspace);
select count(TABLESPACENAME) into icount from MTUSEFULSPACE where TABLESPACENAME = tempspace;
if icount=0 then
DROP TABLESPACE tempspace INCLUDING CONTENTS AND DATAFILES;
end if;
commit;
end loop;
end;
执行后会报如下错误
ORA-06550: 第 10 行, 第 5 列:
PLS-00103: 出现符号 "DROP"在需要下列之一时:
begin case declare exit
for goto if loop mod null pragma raise return select update
while with
close current delete fetch lock insert open rollback
savepoint set sql execute commit forall merge pipe
06550. 00000 - "line %s, column %s:\n%s"
*Cause: Usually a PL/SQL compilation error.
*Action:
好像是被锁了。。
没办法,例程不能写,就只能组出语句执行了。
把需要删除的user, tablespace 导出到Excel. 使用CONCATENATE 组出SQL.
贴到SQLdevelop 批量执行。
整个删除会比较耗时间,, 100多个user. 用了12个小时左右。
如要找datafile的具体位置,可以使用
select t1.name,t2.name from v$tablespace t1, v$datafile t2 where t1.ts# = t2.ts#;
更多Oracle相关信息见Oracle 专题页面 ?tid=12

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