Oracle 导入导出另一种方式 11g 到10g 向下兼容
EXPDP userid=vallen/123456@orcl schemas=vallen directory=DATA_PUMP_DIR dumpfile=aa.dmp logfile=aa.log version=10.2.0.1.0
EXPDP userid=vallen/123456@orcl schemas=vallen directory=DATA_PUMP_DIR dumpfile=aa.dmp logfile=aa.log version=10.2.0.1.0
要导入到10.2.0.1.0版本的Oracle数据库中去。aa.dmp和aa.log将会在11g的dpdump目录中生成,例如我的11g装在了E盘下面,于是aa.dmp将会在E:\app\Administrator\admin\orcl\dpdump目录下被生成。
10g 导入语句:IMPDP userid=vallen/123456@orcl schemas=vallen directory=DATA_PUMP_DIR dumpfile=aa.dmp logfile=aa.log version=10.2.0.1.0
如果导入导出的用户不一样
则需要进行schema转换
schema 的转化:
IMPDP userid=abc/123456@orcl remap_schema=vallen:abc directory=DATA_PUMP_DIR dumpfile=aa.dmp logfile=aa.log version=10.2.0.1.0
表存在处理方式:
a.忽略(SKIP,默认行为);
b.在原有数据基础上继续增加(APPEND);
c.先DROP表,然后创建表,,最后完成数据插入(REPLACE);
d.先TRUNCATE,再完成数据插入(TRUNCATE)。
IMPDP USERID=abc/abc@orcl remap_schema=vallen:abc directory=DATA_PUMP_DIR dumpfile=aa.dmp logfile=aa.log table_exists_action=replace version=10.2.0.1.0

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