Expdp is faster than exp

Hi Experts,
how expdp is faster than exp, what oracle internally change to speed up datapump?
how impdp is faster than imp, what oracle internally change to speed up datapump?
Thanks,

exp/imp are clients. Communication between the database instance and the exp utility that writes the export dump file (or from the imp utility to the database instance) goes through SQLNet.
expdp/impdp are server processes. These processes attach to the SGA.
(for those who know : we used to do impst and expst a long time ago. Even in 10g it is still possible to create the expst/impst binaries. The "st" stands for SingleTask. Client-Server is not SingleTask).
Hemant K Chitale
http://hemantoracledba.blogspot.com

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  • Expdp slower than exp utility

    Hi
    I am doing a simple test with a 6G database using expdp and exp and the timing is as shown below:
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    Why is it that expdp is slower than exp??

    Hi
    I am using the following extra parameters for the exp:
    direct=Y rows=y statistics=none consistent=y
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  • Datapump: expdp taking considerably longer than exp

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    Edited by: user8995776 on Dec 18, 2010 8:29 AM

    i want to add: i checked the trace files and it seems like i'm stuck with the same problem like this guy:
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  • Expdp is faster

    Oracle 10g / Linux
    Why oracle 10g expdp and impdp is fater than exp and imp.
    how to implement network export and network mport in 10g /OEL environment.
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    expdp help=yes
    Export: Release 10.2.0.1.0 - Production on Thursday, 15 April, 2010 19:06:44
    Copyright (c) 2003, 2005, Oracle.  All rights reserved.
    The Data Pump export utility provides a mechanism for transferring data objects
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    ATTACH                Attach to existing job, e.g. ATTACH [=job name].
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    CONTENT               Specifies data to unload where the valid keywords are:
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    DIRECTORY             Directory object to be used for dumpfiles and logfiles.
    DUMPFILE              List of destination dump files (expdat.dmp),
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    ENCRYPTION_PASSWORD   Password key for creating encrypted column data.
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    ESTIMATE_ONLY         Calculate job estimates without performing the export.
    EXCLUDE               Exclude specific object types, e.g. EXCLUDE=TABLE:EMP.
    FILESIZE              Specify the size of each dumpfile in units of bytes.
    FLASHBACK_SCN         SCN used to set session snapshot back to.
    FLASHBACK_TIME        Time used to get the SCN closest to the specified time.
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    HELP                  Display Help messages (N).
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    LOGFILE               Log file name (export.log).
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    TABLESPACES           Identifies a list of tablespaces to export.
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