RE: Relocate indexes during datapump import

From: Alexey B. Danchenkov <dabron_at_hotmail.com>
Date: Mon, 2 Mar 2015 22:05:01 +0300
Message-ID: <DUB131-W22694446486EC2B88ED61EDB100_at_phx.gbl>

Actually, that is the reason why I have advised Jogn about using Data Pump API for this purpose ;)

Date: Mon, 2 Mar 2015 19:53:51 +0100
Subject: Re: Relocate indexes during datapump import From: kibeha_at_gmail.com
To: JDunn_at_sefas.com
CC: dabron_at_hotmail.com; oracle-l_at_freelists.org

Interesting difference (maybe) between command line impdp and dbms_datapump. Take a look at TRANSFORM:
DBMS_DATAPUMP.METADATA_TRANSFORM ( handle IN NUMBER, name IN VARCHAR2, value IN VARCHAR2, object_type IN VARCHAR2 DEFAULT NULL);Command line version for impdp: TRANSFORM = transform_name:value[:object_type]The command line has the optional object_type corresponding to the optional function parameter. Now look at REMAP:
DBMS_DATAPUMP.METADATA_REMAP ( handle IN NUMBER, name IN VARCHAR2, old_value IN VARCHAR2, value IN VARCHAR2, object_type IN VARCHAR2 DEFAULT NULL);The function has the same optional object_type as TRANSFORM, but that does not exist in command line: REMAP_TABLESPACE=source_tablespace:target_tablespaceIt may not be quite comparable, as function METADATA_REMAP handles the functionality of several METADATA_* parameters of impdp.But still a bit funny that the functionality of remapping tablespaces for a specific object type seems to be available in datapump, but only when using the API and not the command line? You might just for fun try in a test environment to do REMAP_TABLESPACE=from_tablespace:to_tablespace:INDEX and see if it works even if undocumented ;-)(Don't get your hopes high - it's a long shot...) Alternatively consider if you can use the DBMS_DATAPUMP api? If you need it to be scriptable, couldn't you as alternative to scripting a call to impdp, instead script a call to sqlplus executing a DBMS_DATAPUMP anonymous block? That would give you the option to use all of the functionality of the API. If that's not an option for some reason, I guess the alternative would be two impdp jobs - one that uses EXCLUDE=index without remap tablespace and then one that uses INCLUDE=index and has REMAP_TABLESPACE.

Regards

Kim Berg Hansen
http://dspsd.blogspot.comkibeha_at_gmail.com _at_kibeha

On Mon, Mar 2, 2015 at 4:17 PM, John Dunn <JDunn_at_sefas.com> wrote:

Thanks for the quick response. Can I do the same using the command line impdp command? I am struggling to find an example of that. John From: Alexey B. Danchenkov [mailto:dabron_at_hotmail.com] Sent: 02 March 2015 14:17
To: John Dunn; oracle-l_at_freelists.org Subject: RE: Relocate indexes during datapump import Hi John,

Yes, it is possible to relocate indexes separately to a different tablespace using Data Pump. For example, you can use a PL/SQL code which uses Data Pump API. This sample code moves only indexes from OLDTABLESPACE' to NEWTABLESPACE:

DECLARE
hd NUMBER;
BEGIN
hd := DBMS_DATAPUMP.OPEN(operation => 'IMPORT',job_mode => 'FULL',remote_link => NULL,job_name => 'DDD',version => 'COMPATIBLE' );

  DBMS_DATAPUMP.ADD_FILE( handle => hd, filename => 'dumpfile.dmp', directory => 'EXPDIR', filetype => DBMS_DATAPUMP.KU$_FILE_TYPE_DUMP_FILE  );


  DBMS_DATAPUMP.ADD_FILE( handle => hd, filename => 'logfile.log', directory => 'EXPDIR', filetype => DBMS_DATAPUMP.KU$_FILE_TYPE_LOG_FILE  );


  DBMS_DATAPUMP.SET_PARAMETER( handle => hd, name => 'REUSE_DATAFILES', value => 0 );

  DBMS_DATAPUMP.SET_PARAMETER( handle => hd, name => 'SKIP_UNUSABLE_INDEXES', value => 0 );

  DBMS_DATAPUMP.METADATA_REMAP ( handle => hd, name => 'REMAP_TABLESPACE', old_value => 'OLDTABLESPACE', value => 'NEWTABLESPACE', object_type => 'INDEX' );


  DBMS_DATAPUMP.SET_PARAMETER( handle => hd, name => 'TABLE_EXISTS_ACTION', value => 'SKIP' );

  DBMS_DATAPUMP.START_JOB(handle => hd);

END;
/

cheers,
Alexey Danchenkov

From: JDunn_at_sefas.com
To: oracle-l_at_freelists.org
Subject: Relocate indexes during datapump import Date: Mon, 2 Mar 2015 14:04:38 +0000 During a datapump import is it possible to relocate indexes to a separate tablespace? Or I do I need to do that before doing the original export? John                                                

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Received on Mon Mar 02 2015 - 20:05:01 CET