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Don Burleson Blog 







data pump transform tips

Oracle Database Tips by Donald BurlesonAugust 21, 2013

The Data Pump TRANSFORM Parameter

TRANSFORM - This parameter instructs the Data Pump import job to modify the storage attributes of the DDL that creates the objects during the import job.

TRANSFORM = transform_name:value[:object_type]
transform_name: takes one of the following values:

SEGMENT_ATTRIBUTES - If the value is specified as y, then segment attributes (physical attributes, storage attributes, tablespaces, and logging) are included, with appropriate DDL. The default is y.

STORAGE - If the value is specified as y, the storage clauses are included, with appropriate DDL. The default is y. This parameter is ignored if SEGMENT_ATTRIBUTES=n.

OID - If the value is specified as n, the assignment of the exported OID during the creation of object tables and types is inhibited. Instead, a new OID is assigned. This can be useful for cloning schemas, but does not affect referenced objects. The default is y.

PCTSPACE - It accepts a greater-than-zero number. It represents the percentage multiplier used to alter extent allocations and the size of data files.

object_type: It can take one of the following values:

impdp hr/hr TABLES=employees \
DIRECTORY=dp_dir DUMPFILE=hr_emp.dmp \
impdp hr/hr TABLES=employees \
DIRECTORY=dp_dir DUMPFILE=hr_emp.dmp \

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