Data Pump Import (invoked with the impdp command) is a new utility as of Oracle This parameter is valid only in the Enterprise Edition of Oracle Database 10g. . expdp SYSTEM/password SCHEMAS=hr DIRECTORY=dpump_dir1. Either run IMP once OR export the 10 schemas to 10 separate files, and imp the 10 2) yes, that is what it is programmed to do (impdp – datapump – is more. For example, if one database is Oracle Database 12c, then the other database must be 12c, 11g, or 10g. Note that Data Pump checks only the major version.

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Data Pump can be used to migrate all or any portion of a database between different releases of the database software. For example, a table is not dependent on an index, but an index is dependent on a table, because an index without a table has no meaning.

The following example invokes Import for user hrusing the connect descriptor named inst This environment variable is defined using operating system commands on the client system where the Data Pump Export and Import utilities are run.

What is the best way to do this? For example, if one database is Oracle Database 12 cthen the other database must be 12 c11 gor 10 g. This parameter enables you to make trade-offs between resource consumption and elapsed time. All data from the expfull.

Specifies the maximum number of threads of active execution operating on behalf of the import job.

Whereas, the original Import utility loaded data in such a way that if a even table had compression enabled, the data was not compressed upon import. If you have data that must 110g loaded, but may cause constraint violations, consider disabling the constraints, oracls the data, and then deleting the problem rows before reenabling the constraints. For example, if the local database is version The master table controls the import job. Data Pump Export and Import access files on the server rather than on the client.


These restrictions can be based on partition names and on the results of subqueries. Oracle recommends that you place INCLUDE statements in a parameter file to avoid having to use operating system-specific escape characters on the command line. A referential integrity constraint is present on a pre-existing table. The target schema must have sufficient quota in the target tablespace. For example, excluding a table will also exclude all indexes and triggers on the table.

Support of additional datatypes and transformations.

Migrating Data Using Oracle Data Pump

Table lists the activities you can perform for the current job from the Data Pump Import prompt in interactive-command mode. If the import operation does create the schema, then after the import is complete, you must assign it a valid orracle in order to connect to it. The objects can be based upon the impdo of the object or the name of the schema that owns the object.

It consists of a SQL operator and the values against which the object names of the specified type are to be compared. If necessary, ask your DBA for help in creating these directory objects and assigning the necessary privileges and roles.

Exporting and Importing Between Different Database Releases

How to import some schemas from a full db export? Could you pl help in this? Restrictions Data Pump Import can only remap tablespaces for transportable imports in databases where the compatibility level is This identifier can specify a database instance that is different from the current instance identified by the current Oracle System ID SID.

The import job looks for the exp1. This status information is written only to your standard output device, not to the log file if one is in effect. For all operations, the information in the master table is used to restart a job.

Loading tables with global or domain indexes defined on them, including partitioned object tables. In that case, no information about the schema definition is imported, only the objects contained within it. Data Pump uses external tables as the data access mechanism in the following situations: The worker processes are the ones that actually unload and load metadata and table data in parallel. Home Questions Tags Users Unanswered.


The same filter name can be specified multiple times within a job. Filtering Data and Metadata During a Job Within the master table, specific objects are assigned attributes such as name or owning schema. However, different source schemas can map to the same target schema. The estimate that is generated can be used to determine a percentage complete throughout the execution of the import job.

An error would be returned.

Also, as shown in the table, some of the parameter names may be the same, but the functionality is slightly different. If the job you are attaching to is stopped, you must supply the job name. Export was successful but import is failing always. Data Pump Import provides much greater data and metadata filtering capability than was provided by the original Import utility. Export Import with schema change September 19, – In logging mode, the job status is continually output to the terminal.

If the dump file set or master table for the job have been deleted, the attach operation will fail. In Oracle Database 10 g, this value must be 9. I have been peeking at AskTom site for several years, but this was the 1st time I asked a question – Ironically this after Dear Tom has already “retired”: Tracking Progress Within a Job While the data and metadata are being transferred, a master table is used to track the progress within a job.

Note that this does not mean that Data Pump Import can be used with versions of Oracle Database prior to Mat 7, 2 33