PARFILE			Specify parameter file.

DIRECTORY		Directory object to be used for dump, log and SQL files.
			Directory name must be created: ex. CREATE DIRECTORY mydir AS '/home/myname/mydir';

DUMPFILE		List of dump files to import from [expdat.dmp].
			For example, DUMPFILE=scott1.dmp, scott2.dmp, dmpdir:scott3.dmp.

FULL			Import everything from source [YES]

SCHEMAS			List of schemas to import

REMAP_SCHEMA		Objects from one schema are loaded into another schema.

TABLES			Identifies a list of tables to import.
			For example, TABLES=HR.EMPLOYEES,SH.SALES:SALES_1995.

REMAP_TABLE		Table names are remapped to another table.
			For example, REMAP_TABLE=HR.EMPLOYEES:EMPS.

TABLE_EXISTS_ACTION	Action to take if imported object already exists.
			Valid keywords are: APPEND, REPLACE, [SKIP] and TRUNCATE.

TABLESPACES		Identifies a list of tablespaces to import

PARTITION_OPTIONS	Specify how partitions should be transformed.
			Valid keywords are: DEPARTITION, MERGE and [NONE]

REMAP_DATAFILE		Redefine data file references in all DDL statements.

REUSE_DATAFILES		Tablespace will be initialized if it already exists [NO].

LOGFILE			Log file name [import.log].

CONTENT			Specifies data to load.
			Valid keywords are: [ALL], DATA_ONLY and METADATA_ONLY.

INCLUDE			Include specific object types.
			For example, INCLUDE=TABLE_DATA.

REMAP_DATA		Specify a data conversion function.
			For example, REMAP_DATA=EMP.EMPNO:REMAPPKG.EMPNO.

QUERY			Predicate clause used to import a subset of a table.
			For example, QUERY=employees:"WHERE department_id > 10"

EXCLUDE			Exclude specific object types.
			For example, EXCLUDE=SCHEMA:"='HR'".

FLASHBACK_SCN		SCN used to reset session snapshot.

FLASHBACK_TIME		Time used to find the closest corresponding SCN value.

NOLOGFILE		Do not write log file [NO].

TRANSPORT_TABLESPACES	List of tablespaces from which metadata will be loaded.
			Only valid in NETWORK_LINK mode import operations.

TRANSPORT_DATAFILES	List of data files to be imported by transportable mode.

TRANSPORT_FULL_CHECK	Verify storage segments of all tables [NO].
			Only valid in NETWORK_LINK mode import operations.

SKIP_UNUSABLE_INDEXES	Skip indexes that were set to the Index Unusable state.

ESTIMATE		Calculate network job estimates.
			Valid keywords are: [BLOCKS] and STATISTICS.

CLUSTER			Utilize cluster resources and distribute workers across the Oracle RAC [YES].

PARALLEL		Change the number of active workers for current job.

ENCRYPTION_PASSWORD	Password key for accessing encrypted data within a dump file.
			Not valid for network import jobs

ENCRYPTION_PWD_PROMPT	Specifies whether to prompt for the encryption password [NO].
			Terminal echo will be suppressed while standard input is read.

NETWORK_LINK		Name of remote database link to the source system.

NOLOGFILE		Do not write log file [NO].

VIEWS_AS_TABLES		Identifies one or more views to be imported as tables.
			For example, VIEWS_AS_TABLES=HR.EMP_DETAILS_VIEW.
			Note that in network import mode, a table name may be appended
			to the view name

DATA_OPTIONS		Data layer option flags.
			Valid keywords are: DISABLE_APPEND_HINT and SKIP_CONSTRAINT_ERRORS.

ABORT_STEP		Stop the job after it is initialized or at the indicated object.
			Valid values are -1 or N where N is zero or greater.
			N corresponds to the object's process order number in the master table.

ACCESS_METHOD		Instructs Import to use a particular method to load data.
			Valid keyword values are: [AUTOMATIC], CONVENTIONAL, DIRECT_PATH
			and EXTERNAL_TABLE

ATTACH			Attach to an existing job.
			For example, ATTACH=job_name.

JOB_NAME		Name of import job to create.

KEEP_MASTER		Retain the master table after an import job that completes successfully [NO].

LOGTIME			Specifies that messages displayed during import operations be timestamped.
			Valid keyword values are: ALL, [NONE], LOGFILE and STATUS

MASTER_ONLY		Import just the master table and then stop the job [NO].

METRICS			Report additional job information to the import log file [NO].

VERSION			Version of objects to import.
			Valid keywords are: [COMPATIBLE], LATEST, or any valid database version.
			Only valid for NETWORK_LINK and SQLFILE

SERVICE_NAME		Name of an active Service and associated resource group to constrain Oracle RAC resources.

STATUS			Frequency (secs) job status is to be monitored where
			the default [0] will show new status when available.

SOURCE_EDITION		Edition to be used for extracting metadata.

STREAMS_CONFIGURATION	Enable the loading of Streams metadata [YES].

TRANSFORM		Metadata transform to apply to applicable objects.
			Valid keywords are: DISABLE_ARCHIVE_LOGGING, INMEMORY, INMEMORY_CLAUSE,
			LOB_STORAGE, OID, PCTSPACE, SEGMENT_ATTRIBUTES, STORAGE, and
			TABLE_COMPRESSION_CLAUSE

TARGET_EDITION		Edition to be used for loading metadata.

TRANSPORTABLE		Options for choosing transportable data movement.
			Valid keywords are: ALWAYS and [NEVER].
			Only valid in NETWORK_LINK mode import operations

HELP			Display help messages [NO].

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command line example
		impdp system/passwd DIRECTORY=my_directory DUMPFILE=mydatadump.dmp REMAP_SCHEMA=hr:scott
		     LOGFILE=mydatadump_imp.log
		use a parameter file
		   SCHEMAS=HR
		   DUMPFILE=mydatadump.dmp
		   DIRECTORY=my_directory
		   LOGFILE=mydatadump_imp.log
		   TABLE_EXISTS_ACTION=REPLACE
		   CONTENT=DATA_ONLY
		   EXCLUDE=CONSTRAINT,REF_CONSTRAINT,INDEX
		   NETWORK_LINK=dblink
		   INCLUDE=PROCEDURE

----------------------------------------------------------------------------------------

INTERACTIVE MODE
Note: abbreviations are allowed.

CONTINUE_CLIENT		Return to logging mode. Job will be restarted if idle.

EXIT_CLIENT		Quit client session and leave job running.

HELP			Summarize interactive commands

KILL_JOB		Detach and delete job

PARALLEL		Change the number of active workers for current job.

START_JOB		Start or resume current job.
			Valid keywords are: SKIP_CURRENT.

STATUS			Frequency (secs) job status is to be monitored where
			the default [0] will show new status when available.

STOP_JOB		Orderly shutdown of job execution and exits the client.
			Valid keywords are: IMMEDIATE.