===== ===== Nous allons maintenant faire un TRUNCATE pour voir si l'espace disque est complètement rendu à Oracle ou s'il reste lié à la table.

1. Description. "alter table truncate partition P1 drop storage;" and then I have rebuild the Global Index. Warning: If you truncate a table, the TRUNCATE …

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Answered by: Tom Kyte - Last updated: May 06, 2013 - 8:37 pm UTC. Thanks for the question, Subhadeep. Le résultat du test est clair : l'espace est quasiment rendu à Oracle, même s'il reste 8 blocks occupant 0.625 Mo. It performs the same function as a DELETE statement without a WHERE clause.

Cette instruction diffère de la commande DROP qui à pour but de […] TRUNCATE de la table : l'espace est libéré. Asynchronous (Delayed) Global Index Maintenance for DROP and TRUNCATE Partition in Oracle Database 12c Release 1.

Oracle / PLSQL: TRUNCATE TABLE Statement. Setup I have tried truncate partition with drop storage to free the space.

I check the dba_free_space, it shows the free space but while checking the HWM in dba_extent, It is still set as high value and not showing free space in tablespace. The TRUNCATE TABLE statement is used to remove all records from a table in Oracle. Asked: May 06, 2013 - 1:54 pm UTC.


Question and Answer. En d’autres mots, cela permet de purger la table. Oracle 12c can optimize the performance of some DROP PARTITION and TRUNCATE PARTITION commands by deferring the associated index maintenance, while leaving the global indexes in a valid state.. This Oracle tutorial explains how to use the Oracle TRUNCATE TABLE statement with syntax, examples, and practice exercises.
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En SQL, la commande TRUNCATE permet de supprimer toutes les données d’une table sans supprimer la table en elle-même. Home » Articles » 12c » Here.