Is=20it=20safe=20that=20I=20run=20"ALTER=20SYSTEM=20CHECK=20DATAFILES;"=20= anytime=20in=20a=20production=20system?=20Thanks. -----Original=20Message----- From:=20oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On=20Behalf=20Of=20Alexander=20Gorba= chev Sent:=20Friday,=20March=2004,=202005=204:01=20PM To:=20ganstadba@xxxxxxxxxxx Cc:=20oracle-l@xxxxxxxxxxxxx Subject:=20Re:=20when=20does=20the=20lost=20datafile=20get=20noticed ALTER=20SYSTEM=20CHECK=20DATAFILES;=20-=20that=20would=20write=20error=20i= n=20alert.log=20if something=20wrong.=20Otherwise,=20it'll=20be=20quite. That's=20what=20I=20do=20immediately=20after=20I=20remove(rename)=20the=20= file=20(well=20a soft=20link=20to=20to=20logical=20volume=20as=20we=20are=20mostly=20in=20R= AC).=20After checking=20alert.log=20I=20can=20remove=20the=20file=20completely. Alex -- //www.freelists.org/webpage/oracle-l For=20technical=20support=20please=20email=20tech_support@xxxxxxxxxxx=20or= =20you=20can call=20(972)721-8257.=20 This=20email=20has=20been=20scanned=20for=20all=20viruses=20by=20the=20Mes= sageLabs=20Email=20Security=20System. This=20e-mail=20is=20intended=20solely=20for=20the=20person=20or=20entity=20= to=20which=20it=20is=20addressed=20and=20may=20contain=20confidential=20an= d/or=20privileged=20information.=20Any=20review,=20dissemination,=20copyin= g,=20printing=20or=20other=20use=20of=20this=20e-mail=20by=20persons=20or=20= entities=20other=20than=20the=20addressee=20is=20prohibited.=20If=20you=20= have=20received=20this=20e-mail=20in=20error,=20please=20contact=20the=20s= ender=20immediately=20and=20delete=20the=20material.=20 ____________________________________________________________________ This=20email=20has=20been=20scanned=20for=20all=20viruses=20by=20the=20Mes= sageLabs=20Email=20Security=20System.=20Any=20questions=20please=20call=20= 972-721-8257=20or=20email=20your=20request=20to=20tech_support@xxxxxxxxxxx= . -- //www.freelists.org/webpage/oracle-l