How can I speed up delete?

In order to speed up the delete, create a clustered index on the date field. How to post data/code on a forum to get the best help. You don’t provide rowcounts, but a large delete may be faster if done in chunks.

Which is faster delete or truncate in Oracle?

TRUNCATE is faster than DELETE , as it doesn’t scan every record before removing it. TRUNCATE TABLE locks the whole table to remove data from a table; thus, this command also uses less transaction space than DELETE . Finally, Oracle requires the DROP ANY TABLE system privilege to use this command.

How do I delete multiple entries in Oracle?

You could use IN : DELETE FROM MYTABLE WHERE (ID, NAME) IN (SELECT 1 AS ID, ‘xyz’ AS NAME FROM dual UNION ALL SELECT 2 AS ID, ‘abc’ AS NAME FROM dual UNION ALL SELECT 3 AS ID, ‘abc’ AS NAME FROM dual); Of course inside subquery you could use any select (for instance from global temporary table).

How do I make SQL delete faster?

Optimizing Delete on SQL Server

1. be sure foreign keys have indexes.
2. be sure the where conditions are indexed.
3. use of WITH ROWLOCK.
4. destroy unused indexes, delete, rebuild the indexes.

Which is faster select or delete?

The select query runs much faster than a similar delete query. Delete does more work than select. But how many rows are found, and how many rows are deleted? (Which should be the same number, of course).

How do I delete a lot of files at once?

To delete multiple files and/or folders:

1. Select the items you’d like to delete by pressing and holding the Shift or Command key and clicking next to each file/folder name.
2. When you have selected all items, scroll to the top of the file display and in the upper-right click the trash icon.

How do I delete bulk history?

Choose a Group of Items to Delete

1. Click the checkbox on the first item.
2. Scroll to the bottom of the page.
3. Press the Shift button on your keyboard and hold it down. While holding it down, click the checkbox on the last item. This is the secret trick!
4. Scroll back to the top of the page, and click “Remove Selected Items”.

How do I make my Oracle update faster?

Oracle update tuning tips

1. Run updates in batch mode.
2. Use CTAS in lieu of large updates.
3. Include the SET condition in the WHERE clause.
4. Simplify the WHERE predicates.
5. Have a small, separate data cache for high DML tables.

How can I update faster?

How can I update Windows 10 faster?

1. Why do updates take so long to install?
2. Free up storage space and defragment your hard drive.
3. Run Windows Update Troubleshooter.
4. Disable startup software.
5. Optimize your network.
6. Schedule updates for low-traffic periods.

How do I make SQL faster?

How To Speed Up SQL Queries

1. Use column names instead of SELECT *
2. Avoid Nested Queries & Views.
3. Use IN predicate while querying Indexed columns.
4. Do pre-staging.
5. Use temp tables.
6. Use CASE instead of UPDATE.
7. Avoid using GUID.
8. Avoid using OR in JOINS.