basic_quiestion_about DATAFILE
Hello,
1.how know datafile is corrupt?
I means, db beging show error mensages? errors popsup?, aler log, ...?
2.what are reason/causes a datafile could turn corrupt?
I means any outages?issue in db?, ...?
3.how to restore/rescue a datafile?..if it'could be do it?
DB: oracle 11g
jde 9.1
tool 9.2.4.6
great thanks