Using 2 redo log file groups

1. g1_loga.ora:This is member 1 of group 1 stored on disk 1.
2. g1_logb.ora:This is member 2 of group 1 stored on disk 2.
3. g2_loga.ora:This is member 1 of group 2 stored on disk 1.
4. g2_loga.ora:This is member 2 of group 2 stored on disk 2.
5. LGWR:LGWR will write to members 1 & 2 of group 1. When a switch occurs, LGWR will write to members 1 & 2 of group 2.
6. disk 1:If disk 1 fails, LGWR will continue writing to disk 2 without database failure.
7. disk 2:If disk 2 fails, LGWR will continue writing to disk 1 without database failure.
8. redo group 1:There must be at least 2 members of the same size in each group. Each group should contain the same number of members.
9. redo group 2:There must be at least 2 members of the same size in each group. Each group should contain the same number of members.