create tablespace ybp_dev datafile 'G:\app\Administrator\oradata\health\ybp_dev1.dbf' size 10m autoextend on;create user 用户名 default tablespace 表空间名 identified by 用户密码;grant connect,resource to 用户;测试连接 conn mpi/1234删除表空间 drop tablespace XX including contents and datafiles cascade constraints; //including contents 删除表空间的内容 //cascade constraints同时删除 tablespace中表的外键参照删除用户 drop user USERNAME CASCADE; 如提示ora-01940 无法删除已经连接会话的用户 select username,sid,serial# from v$session where username like 'HIP4' 找到要删除用户的sid,和serial，并删除 alter system kill session'532,4562'------------------------------------------- su - oracle -切换oracle用户 sqlplus / as sysdba -本地登录sqlplus select * from dba_directories; -查询路径 drop directory dp_dir; -删除目录 create directory dp_dir as '/backup/dp_dir'; -创建目录 grant read,write on directory dp_dir to public; -赋权目录 expdp xx/xx directory=dp_dir dumpfile=xxx.dmp schemas=xxx --导出 当有两个数据库时需要加上
用户名/密码@IP：port/SID
例：
expdp xx/xx@127.0.0.1：1521/orcl directory=dp_dir dumpfile=xxx.dmp schemas=xxx
例 expdp '"/as sysdba"' directory=dp_dir dumpfile=xx1207.dmp schemas=xx impdp '"/as sysdba"' directory=dp_dir dumpfile=1112mdbyl.dmp --导入.注意此处不加封 封号！！！！ impdp '"/as sysdba"' directory=dp_dir dumpfile=1112mdbyl.dmp remap_schema=mdbyl:mdbyl3 --导入改名select file_name,tablespace_name from dba_data_files; --查询数据文件路径select username,default_tablespace from dba_users where username like 'X%'; --模糊查询x开头的用户SELECT * FROM V$SESSION WHERE USERNAME='PINGTAI';alter system kill session '3406,1671'; drop user PINGTAI cascade; --------------------------------------------------- SELECT t.table_name,t.colUMN_NAME,t.DATA_TYPE || '(' || t.DATA_LENGTH || ')',t1.COMMENTSFROM User_Tab_Cols t, User_Col_Comments t1 WHERE t.table_name = t1.table_nameAND t.column_name = t1.column_name(+);
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select 'analyze table ' || t.table_name || ' compute statistics; ' from user_tables t where table_name not like 'TMP_%'--生成分析语句
select t.table_name,t.num_rows from user_tables t ORDER BY NUM_ROWS DESC;--统计数据量
)
