Removal of the records in the tables

Oracle 11g - Windows Server 2008

After you delete a large number of records in a table, I think I should reorg or do something for it to be fine.

The table name is def_lancs.
I deleted records over 1 million of this table. It now has 2 million records.
What commands can I use to put this table in order?

Eduardo

788042 wrote:
Hello

In the SQL databases after you delete a large number of rows in a table, we have a very large space with no information.
Lines are deleted, but the space using these lines is always there.
We must therefore use retractable in order to remove this empty space.
After that, the present table less space and performance improves.

I don't know how it works in Oracle.
But as you tell me to relax and have a cup of coffee, I think that the Oracle databases do this automatically.
Is this true?

Eduardo

No, they don't to shrink automatically and free up space, but usually no need to. Oracle manages to somehow fundamentally and profoundly different than SQLServer. Best practices in may very well be the worst practices in the other. In oracle, allocation and deallocation extensions are quite expensive activity. If I delete a bunch of lines that normally I guess at some point the space the lines take it will take once again, so I'm not going to Oracle through the effort to free the space just for having to recover again. At least not outside has demonstrated clearly need to do.

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