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Performance degradation after partioning tables using DBMS_REDEFINITION package

We have created partitions on per-existing tables in my application using DBMS_REDEFINITION package. just for the sake of improving performance. Now , We are facing an issue in the performance ...
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466 views

Moving a table to a different tablespace in Oracle using Online Redefinition Vs Alter table move tablespace

I have a table with 1 Billion records with size 300GB to move to different tablespace. My question here is - What is the advantage of using DBMS_REDEFINITION (Online redefinition) package over Alter ...
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Redefining a table with a user-defined type using DBMS_REDEFINITION

The application which we developed has one schema, USER1, which has tables, types, packages etc. I have to move some of the user-defined types to a different schema, The reason for doing this is to ...
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278 views

Why is SQL*Plus' desc table not showing not null constraints after using dbms_redefinition

I have the following table that I want to redefine: create table tq84_redefinition ( id number primary key, ts1 timestamp not null, ts2 timestamp ); Please note the not null constraint on the ...