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Migrate Tablespace from Dictonary to Local using Brtools

Hi all,

We have R/3 4.6c on Oracle with Brtools 7.0.

We have to migrate one tablespace from dictonary managed to Local, Table is on PSAPBTABD and indexes on PSAPBTABI.

Please suggest how can i migrate the Tablespace from Dictonary to local.



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2 Answers

  • Best Answer
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    Former Member
    May 27, 2009 at 12:31 AM


    To switch from dictionary-managed to locally managed tablespaces on existing

    databases, a reorganization is necessary. Whether this reorganization can be done

    online or must be done with export/import depends on the database version.

    All tablespaces created by SAP installation tools in the "old" tablespace layout

    were created as dictionary-managed tablespaces. SAP recommends using locally

    managed tablespaces, which is standard if the new MCOD tablespace layout was

    created by the installation tools.

    In dictionary managed tablespaces, Oracle checks and updates data dictionary

    tables whenever a new extent must be allocated (for example, due to table growth)

    or deleted. The extent size and other parameters are called storage parameters

    and are stored in the Oracle data dictionary.

    Storage parameters can be set on the creation of a tablespace. These parameters

    are then used for all tables in this tablespace as defaults. The defaults can be

    overridden when a table is created, or changed with BR*Tools for existing tables.

    With locally managed tablespaces, each data file has a bitmap listing used and

    free blocks within the data file. When a new extent needs to be allocated, Oracle

    selects one data file and checks in the bitmap, whether or not enough contiguous

    blocks exist to create a new extent. It does so for each data file of the tablespace

    until it finds the free space to allocate the extent.

    For details check below mentioned SAP notes & links.

    Note 214995 - Oracle locally-managed tablespaces in the SAP environment

    Note 646681 - Reorganizing tables with BRSPACE

    Note 541538 - FAQ: Reorganization




    Hope this answers your query.



    Edited by: Sushil Suryawanshi on May 27, 2009 6:01 AM

    Edited by: Sushil Suryawanshi on May 27, 2009 6:02 AM

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    Former Member
    Nov 17, 2009 at 10:05 PM


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