Atrix, I will not recommend it.
You might get lucky and it will execute without any problems, but, I personally, will not risk it (due to my past experiences). I batch my structure changes. So at the end of the day (when I'm the only one left in the office aside from the janitor), I connect to the database in single user mode and make the appropriate changes (after a back up and unload file has been created). "Better to be safe than sorry." -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Atrix Wolfe Sent: Friday, June 20, 2003 11:41 AM To: RBASE-L Mailing List Subject: [RBASE-L] - RE: Alter Table (was SYS_TABLES TABLE) is there any risk of corrupting a database/table doing something like: alter mytable add amount currency while users are using the system?
