oracle 数据库运维sql
1.登录dba用户命令
登录数据库服务器,打开命令窗口进行输入
sqlplus / as sysdba
2.用户命令
- 删除用户
DROP USER `****` CASCADE;
DROP SCHEMA `****` CASCADE;
- 创建用户
create user `username` identified by `password`;
- 用户权限
grant create session,create table,unlimited tablespace,dba to `username`;
- 配置用户表空间
alter user `username` default tablespace `****`;
alter user `username` temporary tablespace `****`;
3.表空间命令
- 查询表空间数据库文件信息
select * from `dba_data_files`;
- 查询表空间使用信息
SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
D.TOT_GROOTTE_MB "表空间大小(M)",
D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,2),'990.99') || '%' "使用比",
F.TOTAL_BYTES "空闲空间(M)",
F.MAX_BYTES "最大块(M)"
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
FROM SYS.DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) F,
(SELECT DD.TABLESPACE_NAME,
ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
FROM SYS.DBA_DATA_FILES DD
GROUP BY DD.TABLESPACE_NAME) D
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
ORDER BY 1;
- 创建表空间
CREATE TABLESPACE `****` datafile `'****.dbf'` SIZE `500M` AUTOEXTEND ON NEXT `50M` MAXSIZE `5G`;
- 创建临时表空间
CREATE TEMPORARY TABLESPACE `****` TEMPFILE `'****.dbf'` SIZE `50M` AUTOEXTEND ON NEXT `50M` MAXSIZE `2G`;
- 扩展表空间
ALTER TABLESPACE `****` ADD DATAFILE `'****.dbf'` SIZE `5G` AUTOEXTEND ON NEXT `50M` MAXSIZE `20G`;