通过SQL管理表空间、用户、授权
--创建表空间CREATE TABLESPACE CRMDBDATAFILE '/opt/oracle/app/oradata/testdb/crm.dbf' SIZE 500MAUTOEXTEND 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;--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;
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