impdp 与 imp区别

今天刚遇到了这个问题：impdp 如果不导入权限？看了下impdp参数没有了grants选项，看了些文档发现还是除了data dump 必需要在服务端执行个参数上还是有一定区别的

放上官方的对照表

Original Import Parameter	Comparable Data Pump Import Parameter
BUFFER	A parameter comparable to `BUFFER` is not needed.
CHARSET	A parameter comparable to `CHARSET` is not needed.
COMMIT	A parameter comparable to `COMMIT` is not supported.
COMPILE	A parameter comparable to `COMPILE` is not supported.
CONSTRAINTS	`EXCLUDE=CONSTRAINT`
DATAFILES	`TRANSPORT_DATAFILES`
DESTROY	`REUSE_DATAFILES`
FEEDBACK	`STATUS`
FILE	`DUMPFILE`
FILESIZE	Not necessary. It is included in the dump file set.
FROMUSER	`SCHEMAS`
FULL	`FULL`
GRANTS	`EXCLUDE=GRANT`
HELP	`HELP`
IGNORE	`TABLE_EXISTS_ACTION`
INDEXES	`EXCLUDE=INDEX`
INDEXFILE	`SQLFILE` with `INCLUDE` `INDEX`
LOG	`LOGFILE`
PARFILE	`PARFILE`
RECORDLENGTH	A parameter comparable to `RECORDLENGTH` is not needed.
RESUMABLE	A parameter comparable to `RESUMABLE` is not needed. It is automatically defaulted for privileged users.
RESUMABLE_NAME	A parameter comparable to `RESUMABLE_NAME` is not needed. It is automatically defaulted for privileged users.
RESUMABLE_TIMEOUT	A parameter comparable to `RESUMABLE_TIMEOUT` is not needed. It is automatically defaulted for privileged users.
ROWS=N	`CONTENT`=`METADATA_ONLY`
ROWS=Y	`CONTENT`=`ALL`
SHOW	`SQLFILE`
SKIP_UNUSABLE_INDEXES	`SKIP_UNUSABLE_INDEXES`
STATISTICS	A parameter comparable to `STATISTICS` is not needed. If the source table has statistics, they are imported.
STREAMS_CONFIGURATION	`STREAMS_CONFIGURATION`
STREAMS_INSTANTIATION	A parameter comparable to `STREAMS_INSTANTIATION` is not needed.
TABLES	`TABLES`
TABLESPACES	This parameter still exists, but some of its functionality is now performed using the `TRANSPORT_TABLESPACES` parameter.
TOID_NOVALIDATE	A command comparable to `TOID_NOVALIDATE` is not needed. OIDs are no longer used for type validation.
TOUSER	`REMAP_SCHEMA`
TRANSPORT_TABLESPACE	`TRANSPORT_TABLESPACES` (see command description)
TTS_OWNERS	A parameter comparable to `TTS_OWNERS` is not needed because the information is stored in the dump file set.
USERID	A parameter comparable to `USERID` is not needed. This information is supplied as the `username`/`password` when you invoke Import.
VOLSIZE	A parameter comparable to `VOLSIZE` is not needed because tapes are not supported.