1、数据库监听启动关闭
2、创建表空间,创建用户赋权和回收用户权限
3、查看用户权限
4、删除用户和表空间
5、快速删除某个用户所有的表数据,表结构,回收权限,删除用户
1、数据库监听启动关闭
// 登录方式 SQL> sqlplus "/as sysdba" SQL> conn / as sysdba // 以system用户身份登陆oracle SQL> sqlplus /nolog SQL> conn / as sysdba //立 即关闭方式 SQL> shutdown immediate // 启动数据库 SQL> startup // 查看监听状态 SQL> lsnrctl status // 启动监听 SQL> lsnrctl start // 关闭监听 SQL> lsnrctl stop
附:oracle常用的45个查询Sql http://blog.sina.com.cn/s/blog_6d6e54f70102w78r.html
2、创建表空间,创建用户赋权和回收用户权限
//创建tablespace自动扩展大小 create tablespace URSP_SLSADMIN logging datafile '/data/URSP_SLSADMIN.dbf' size 1500M autoextend on next 8000M maxsize unlimited extent management local segment space management auto; SQL> create tablespace SLSADMIN datafile '/data/SLSADMIN.dbf' size 1500M //自动扩展表空间大小 create tablespace SLSADMIN datafile '/tab/SLSADMIN.DBF' size 100M autoextend on; //删除tablespace,需要手动删除路径下对应的文件 SQL> drop tablespace SLSADMIN.dbf //创建用户赋值tablespace SQL> create user SLSADMIN_1104 identified by SLSADMIN_1104 default tablespace URSP_SLSADMIN; SQL> alter user SLSADMIN_1104 default tablespace TBS_SJ_POC; //赋值用户BDA权限 SQL> grant connect,resource,dba to SLSADMIN_1104 ; //回收dba权限 SQL> revoke dba from SLSADMIN_1104; // 授权表的权限给某个用户 select 'grant select,insert,update,delete on ' || table_name || ' to user;' from user_tables
3、查看用户权限
//可能遇到的问题? //当在一个新建数据库用户上创建表失败时,可以查看系统权限;在当前用户执行 select * from dba_role_privs where grantee=upper('username'); //如果不能执行(提示表或视图不存在),说明没有dba权限 解决方法:可以登录sys账户赋予dba权限 登录sys:sqlplus / as sysdba 给username赋权限:grant dba to username; //也可以直接登录sys账户: 如果granted_role的值没有dba,说明没有dba权限 select * from dba_role_privs where grantee=upper('username'), //查看指定用户有哪些系统权限 SQL> select * from dba_role_privs where grantee=upper('username'); //查看指定用户有哪些对象权限 SQL> select * from dba_tab_privs where grantee=upper('username');
4、删除用户和表空间
//查询DBA权限用户 select * from dba_role_privs where granted_role='DBA' //回收DBA权限 revoke dba from SLSADMIN_GX //查询所有用户,包含普通用户 select * from dba_users; //查看表tablespace路径 select * from dba_data_files; //删除tablespace drop tablespace SLSADMIN including contents and datafiles cascade constraint //锁定用户 alter user SLSADMIN_GX account lock //查看用户的连接状况 select * from V$session where username='SLSADMIN_GX' //kill 当前用户session回话 alter system kill session 'xx,xx' //删除用户以及所有关联的数据库对象 drop user xx cascade
5、快速删除某个用户所有的表数据,表结构,回收权限,删除用户
//查询单列重复信息 select * from test where name in (select name from test group by name having count (name) > 1) //删除重复信息 select * from delete from cap_user where rowid in ( select max(rowid) from cap_user group by operator_id having count(1)>1 )
//快速查询删除用户下的表数据据 select 'delete from '|| table_name || ';' from user_tables order by table_name; //锁定用户 alter user reports account lock; //查询用户的session连接 select * from V$session where username='REPORTS' //kill当前用户session连接 alter system kill session '239,85' drop user reports cascade
6、查看表空间的大小及使用情况sql语句
1、//查看表空间的名称及大小 SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size FROM dba_tablespaces t, dba_data_files d WHERE t.tablespace_name = d.tablespace_name GROUP BY t.tablespace_name; 2、//查看表空间物理文件路径的名称及大小 SELECT tablespace_name, file_id, file_name, round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name; 3、//查看回滚段名称及大小 SELECT segment_name, tablespace_name, r.status, (initial_extent / 1024) initialextent, (next_extent / 1024) nextextent, max_extents, v.curext curextent FROM dba_rollback_segs r, v$rollstat v WHERE r.segment_id = v.usn(+) ORDER BY segment_name; 4、//查看控制文件 SELECT NAME FROM v$controlfile; 5、//查看日志文件 SELECT MEMBER FROM v$logfile; 6、//查看表空间的使用情况 SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name FROM dba_free_space GROUP BY tablespace_name; SELECT a.tablespace_name, a.bytes total, b.bytes used, c.bytes free, (b.bytes * 100) / a.bytes "% USED ", (c.bytes * 100) / a.bytes "% FREE " FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c WHERE a.tablespace_name = b.tablespace_name AND a.tablespace_name = c.tablespace_name; 7、//查看表空间总数求和,已经使用的表空间 select total.tablespace_name,round(total.MB,2) as Total_MB, round(total.MB-free.MB, 2) as Used_MB from (select tablespace_name, sum(bytes)/1024/1024 as MB from dba_free_space group by tablespace_name) free, (select tablespace_name, sum(bytes)/1024/1024 as MB from dba_data_files group by tablespace_name) total where free.tablespace_name=total.tablespace_name 8、//查看数据库库对象 SELECT owner, object_type, status, COUNT(*) count# FROM all_objects GROUP BY owner, object_type, status; 9、//查看数据库的版本 SELECT version FROM product_component_version WHERE substr(product, 1, 6) = 'Oracle'; 10、//查看数据库的创建日期和归档方式 SELECT created, log_mode, log_mode FROM v$database; 11、//查表空间使用率情况(含临时表空间) SELECT d.tablespace_name "Name", d.status "Status", TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)", TO_CHAR (NVL (a.BYTES - NVL (f.BYTES, 0), 0) / 1024 / 1024, '99999999.99' ) USE, TO_CHAR (NVL ((a.BYTES - NVL (f.BYTES, 0)) / a.BYTES * 100, 0), '990.00' ) "Used %" FROM SYS.dba_tablespaces d, (SELECT tablespace_name, SUM (BYTES) BYTES FROM dba_data_files GROUP BY tablespace_name) a, (SELECT tablespace_name, SUM (BYTES) BYTES FROM dba_free_space GROUP BY tablespace_name) f WHERE d.tablespace_name = a.tablespace_name(+) AND d.tablespace_name = f.tablespace_name(+) AND NOT (d.extent_management LIKE 'LOCAL' AND d.CONTENTS LIKE 'TEMPORARY') UNION ALL SELECT d.tablespace_name "Name", d.status "Status", TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.90') "Size (M)", TO_CHAR (NVL (t.BYTES, 0) / 1024 / 1024, '99999999.99') USE, TO_CHAR (NVL (t.BYTES / a.BYTES * 100, 0), '990.00') "Used %" FROM SYS.dba_tablespaces d, (SELECT tablespace_name, SUM (BYTES) BYTES FROM dba_temp_files GROUP BY tablespace_name) a, (SELECT tablespace_name, SUM (bytes_cached) BYTES FROM v$temp_extent_pool GROUP BY tablespace_name) t WHERE d.tablespace_name = a.tablespace_name(+) AND d.tablespace_name = t.tablespace_name(+) AND d.extent_management LIKE 'LOCAL' AND d.CONTENTS LIKE 'TEMPORARY'; --------------------------tablespace使用大小计算------------------------------- 1G=1024MB 1M=1024KB 1K=1024Bytes 1M=11048576Bytes 1G=1024*11048576Bytes=11313741824Bytes SELECT a.tablespace_name "表空间名", total "表空间大小", free "表空间剩余大小", (total - free) "表空间使用大小", total / (1024 * 1024 * 1024) "表空间大小(G)", free / (1024 * 1024 * 1024) "表空间剩余大小(G)", (total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)", round((total - free) / total, 4) * 100 "使用率 %" FROM (SELECT tablespace_name, SUM(bytes) free FROM dba_free_space GROUP BY tablespace_name) a, (SELECT tablespace_name, SUM(bytes) total FROM dba_data_files GROUP BY tablespace_name) b WHERE a.tablespace_name = b.tablespace_name -----------------------------扩增表空间大小----------------------------------------- //查询用户对应的表空间,我们可以看到针对不同的数据库用户ORACLE select username, default_tablespace, temporary_tablespace from dba_users; //查询用户的对应的数据文件,以及数据文件大小 select tablespace_name, file_id, file_name, round(bytes/(1024*1024),0) total_space from dba_data_files order by tablespace_name; //扩增表空间大小 SQL> ALTER DATABASE DATAFILE '/data/URSP_SLSADMIN.dbf' RESIZE 8000M ;
7、表结构及数据导入与导出
// 导入数据 imp AML/AML@172.16.87.140:1521/orcl fromuser=URSPMONITOR touser=AML FILE=/data/aml.dmp full=y ignore=y; imp aml/xjnx_ursp_aml1@10.1.51.53:1521/pisa fromuser=URDPMONITOR touser=aml file=/jgtest/aml_rule_autoslay.dump 在导入数据时出现无法找到目标用户进行赋值错误,需要使用fromuser=URSPMONITOR touser=AML,即忽略用户授权错误; exp urspmonitor/urspmonitor@10.1.48.53:1521/dwursp file=aml_rule_autoslay.dump tables=aml_rule_autoslay_0705