Ask the Expert

Resizing files in redo log groups

I have an Oracle9i database defined with three redolog groups and each group with one member of size 100 MB. I would like to know if it is possible to alter the unique member of all the three groups from 100 MB to 10 MB, and how.

    Requires Free Membership to View

When I try to resize a logfile, I get the following error message:
SQL> alter database datafile '/edcsns20/oradata11/gasb/redo01.log' resize 50m;
alter database datafile '/edcsns20/oradata11/gasb/redo01.log' resize 50m
ERROR at line 1:
ORA-01516: nonexistent log file, datafile, or tempfile

So the easiest way would be to add new redo log groups, with the file sizes you want. Then, issue the ALTER SYSTEM SWITCH LOGFILE command to start using one of the new groups. Then drop the old groups. You can do this with the database up and running.

This was first published in April 2004

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: