【原创】Oracle数据库逻辑迁移步骤

Oracle数据库逻辑迁移步骤

一、首先，查询并得到导出所有非Oracle自带用户数据的exp导出脚本：

SELECT 'EXP SYSTEM/PASSWORD@ORCL FILE=' || USERNAME || '.DMP LOG=' ||

        USERNAME || '.LOG OWNER=' || USERNAME || '

'

  FROM ALL_USERS T

 WHERE T.CREATED >

       (SELECT R.CREATED FROM ALL_USERS R WHERE R.USERNAME = 'SYSTEM') + 1;

二、接着，得到新库中创建所需非Oracle自带用户的sql脚本：

SELECT 'CREATE USER ' || USERNAME || 'IDENTIFIED BY PASSWORD;' || '

       /' || '

       GRANT CONNECT, RESOURCE TO ' || USERNAME || ';' || '

       /'

  FROM ALL_USERS T

 WHERE T.CREATED >

       (SELECT R.CREATED FROM ALL_USERS R WHERE R.USERNAME = 'SYSTEM') + 1;

三、接着，得到在新库中创建导入数据所需表空间的sql脚本：

SELECT 'CREATE TABLESPACE ' || NAME || 'LOGGING DATAFILE ' || NAME ||

       '.ORA' ||

       'SIZE 1000M AUTOEXTEND ON NEXT 300M MAXSIZE UNLIMITED EXTENT MANAGEMENT LOCAL;'

  FROM V$TABLESPACE

 WHERE NAME NOT IN ('SYSTEM', 'UNDOTBS1', 'SYSAUX', 'USERS', 'TEMP');

四、最后，查询并得到导入所有非Oracle自带用户数据的imp导入脚本：

SELECT 'IMP SYSTEM/PASSWORD@ORCL FILE=' || USERNAME || '.DMP LOG=' ||

        USERNAME || '.LOG FROMUSER=' || USERNAME || ' TOUSER=' || USERNAME || '

'

  FROM ALL_USERS T

 WHERE T.CREATED >

       (SELECT R.CREATED FROM ALL_USERS R WHERE R.USERNAME = 'SYSTEM') + 1;

末了，进行查询，确认迁移数据成功。