2020-03-22T17:25:16.324311+01:00 SQL> alter diskgroup data mount 2020-03-22T17:25:16.339928+01:00 NOTE: cache registered group DATA 1/0x4C6031D1 NOTE: cache began mount (first) of group DATA 1/0x4C6031D1 NOTE: Assigning number (1,8) to disk (ORCL:CELLI02) NOTE: Assigning number (1,9) to disk (ORCL:CELLI03) NOTE: Assigning number (1,0) to disk (ORCL:CELLI04) NOTE: Assigning number (1,11) to disk (ORCL:CELLI05) NOTE: Assigning number (1,3) to disk (ORCL:CELLI06) NOTE: Assigning number (1,2) to disk (ORCL:CELLI07) 2020-03-22T17:25:16.523675+01:00 cluster guid (e4db41a22bd95fc6bf79d2e2c93360c7) generated for PST Hbeat for instance 1 NOTE: initial disk modes for disk 9 (CELLI03) in group 1 (DATA) is not completely online: modes 0x1 lflags 0x4 2020-03-22T17:25:16.525101+01:00 NOTE: cache closing disk 9 of grp 1: (not open) CELLI03 2020-03-22T17:25:22.531073+01:00 ERROR: disk 1 (unknown) in group 1 (DATA) cannot be offlined because all disks [1(unknown), 9(CELLI03)] with mirrored data would be offline. 2020-03-22T17:25:22.531144+01:00 ERROR: too many offline disks in PST (grp 1) 2020-03-22T17:25:22.531688+01:00 NOTE: cache dismounting (clean) group 1/0x4C6031D1 (DATA) NOTE: messaging CKPT to quiesce pins Unix process pid: 6891, image: oracle@asmrec.oralocal (TNS V1-V3) NOTE: dbwr not being msg'd to dismount NOTE: LGWR not being messaged to dismount NOTE: cache dismounted group 1/0x4C6031D1 (DATA) NOTE: cache ending mount (fail) of group DATA number=1 incarn=0x4c6031d1 NOTE: cache deleting context for group DATA 1/0x4c6031d1 2020-03-22T17:25:22.532473+01:00 GMON dismounting group 1 at 180 for pid 34, osid 6891 2020-03-22T17:25:22.532694+01:00 NOTE: Disk CELLI04 in mode 0x7f marked for de-assignment NOTE: Disk CELLI07 in mode 0x7f marked for de-assignment NOTE: Disk CELLI06 in mode 0x7f marked for de-assignment NOTE: Disk CELLI02 in mode 0x7f marked for de-assignment NOTE: Disk CELLI03 in mode 0x1 marked for de-assignment NOTE: Disk CELLI05 in mode 0x7f marked for de-assignment ERROR: diskgroup DATA was not mounted ORA-15032: not all alterations performed ORA-15017: diskgroup "DATA" cannot be mounted ORA-15066: offlining disk "1" in group "DATA" may result in a data loss 2020-03-22T17:25:22.588113+01:00 ERROR: alter diskgroup data mount 2020-03-22T17:25:22.691136+01:00 ASM Health Checker found 1 new failures