LGWR doing non-clean dismount of group
We needed to move the storage area, so I run asmcmd umount -f and saw the following in the alert log:
SQL> /* ASMCMD */ALTER DISKGROUP BBX_G DISMOUNT FORCE
NOTE: cache dismounting (not clean) group 1/0x0F97AFA7 (BBX_G)
NOTE: messaging CKPT to quiesce pins Unix process pid: 4586, image: oracle@Recoverer (TNS V1-V3)
Wed Jun 03 08:08:05 2015
NOTE: halting all I/Os to diskgroup 1 (BBX_G)
Wed Jun 03 08:08:05 2015
NOTE: LGWR doing non-clean dismount of group 1 (BBX_G)
NOTE: LGWR sync ABA=61.6171 last written ABA 61.6171
NOTE: cache dismounted group 1/0x0F97AFA7 (BBX_G)
Wed Jun 03 08:08:05 2015
GMON dismounting group 1 at 62 for pid 18, osid 4586