How critical is it if SYSAUX is full

oracle

I recently got an Ora-1688 alert and realized my SYSAUX is 99.7% full.
Is this a critical issue that has to be dealt with immediately?
Will this cause my system to stop?

Best Answer

If your Database has enabled AUDIT and your auditing tablespace SYSAUX gets 100% full, NONE of database users will be able to log in to database anymore. Your database will not crash but only SYS db user will be able to log in - the first thing you should do in this case is to extend the SYSAUX tablespace (add a data file) and deal later with how SYSAUX got full at the first place.