--创建表空间 CREATE TABLESPACE CRMDB DATAFILE '/opt/oracle/app/oradata/testdb/crm.dbf' SIZE 500M AUTOEXTEND ON NEXT 100M; --创建用户 create user CRM identified by password default tablespace CRMDB; --给用户赋权限 grant dba to CRM; ---删除用户及数据 drop user CRM cascade; --删除表空间和表空间文件 drop tablespace tablespace_name including contents and datafiles; --修改用户密码 alter user sys identified by system; --查看表空间使用情况 select a.tablespace_name, a.bytes / 1024 / 1024 "Sum MB", (a.bytes - b.bytes) / 1024 / 1024 "used MB", b.bytes / 1024 / 1024 "free MB", round(((a.bytes - b.bytes) / a.bytes) * 100, 2) "percent_used" from (select tablespace_name, sum(bytes) bytes from dba_data_files group by tablespace_name) a, (select tablespace_name, sum(bytes) bytes, max(bytes) largest from dba_free_space group by tablespace_name) b where a.tablespace_name = b.tablespace_name order by ((a.bytes - b.bytes) / a.bytes) desc --查看表空间文件地址 select name from v$datafile;
通过SQL管理表空间、用户、授权
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