What is the difference between IMP and Impdp?
What is the difference between IMP and Impdp?
Datapump has parallel execution but in exp/imp single stream execution. Datapump does not support sequential media like tapes, but traditional export supports….Difference between exp/imp and expdp/impdp?
| SLNO | EXP/IMP Parameter | EXPDP/IMPDP Parameter |
|---|---|---|
| 4 | IMP: fromuser, touser | IMPDP: remap_schema |
What is Oracle Impdp?
Data Pump Import (invoked with the impdp command) is a new utility as of Oracle Database 10g. Import can also be used to load a target database directly from a source database with no intervening dump files. This allows export and import operations to run concurrently, minimizing total elapsed time.
What is the difference between export and Expdp?
What is the difference between normal exp/imp and datapump expdp/impdp? Datapump is a server side utility whereas export/import is a user process. datapump processes running on the server have direct access to the datafiles and the SGA. They don’t have to go via session.
How do you run a Parfile?
Let’s do it.
- Step 1: Create a Directory. Note here, this step must be performed by DBA on server system.
- Step 2: Create Directory Object and grant mandatory privileges.
- Step 3: Create a parameter file.
- Step 4: Export Tables Using PARFILE.
What is the syntax for impdp remap_Schema=source and target?
Syntax: impdp REMAP_SCHEMA=source:target where source and target are the schema names. More than one schema mapping can be done in impdp where the source schema must be different for each one. Target schema can be the same or different. It is not mandatory to have the target schema in the database. If the target schema does not exist
What is remap_schema and how does it work?
For triggers, REMAP_SCHEMA affects only the trigger owner. If any table in the schema being remapped contains user-defined object types and that table changes between the time it is exported and the time you attempt to import it, then the import of that table will fail. However, the import operation itself will continue.
How do I import a dmp file into an existing schema?
Oracle. IMPDP WITH REMAP_SCHEMA I am trying to import a table from Archives (.DMP file) into an existing table in an existing schema. Our procedure is to first load the .DMP file onto a temporary schema (AMP_ARCHIVE), then load it onto the production schema (AMP_NONCORE) using REMAP_SCHEMA, as shown in the query below.
Can privileged users perform unrestricted schema remaps?
(Privileged users can perform unrestricted schema remaps.) For example, SCOTT can remap his BLAKE ‘s objects to SCOTT, but SCOTT cannot remap SCOTT ‘s objects to BLAKE. The mapping may not be 100 percent complete because there are certain schema references that Import is not capable of finding.
