Quorum Voting Disk Does Not Come Online After Every Reboot (Doc ID 2183146.1)

Last updated on APRIL 28, 2017

Applies to:

Oracle Exadata Storage Server Software - Version 12.1.2.3.0 to 12.1.2.2.3 [Release 12.1]
Oracle Database - Enterprise Edition - Version 12.1.0.2 to 12.2 BETA1 [Release 12.1 to 12.2]
Information in this document applies to any platform.

Symptoms

If you reboot the Quorum Voting Disk Does Not Come Online automatically .

Example after reboot

=====================

SQL> SELECT * FROM V$ASM_DISK ORDER BY GROUP_NUMBER,DISK_NUMBER;

GROUP_NUMBER DISK_NUMBER COMPOUND_INDEX INCARNATION MOUNT_S HEADER_STATU MODE_ST STATE REDUNDA LIBRARY OS_MB TOTAL_MB FREE_MB HOT_USED_MB COLD_USED_MB NAME FAILGROUP LABEL PATH UDID PRODUCT CREATE_DATE MOUNT_DATE REPAIR_TIMER READS WRITES READ_ERRS WRITE_ERRS READ_TIMEOUT WRITE_TIMEOUT READ_TIME WRITE_TIME BYTES_READ BYTES_WRITTEN P HASH_VALUE HOT_READS HOT_WRITES HOT_BYTES_READ HOT_BYTES_WRITTEN COLD_READS COLD_WRITES COLD_BYTES_READ COLD_BYTES_WRITTEN V SECTOR_SIZE FAILGRO CON_ID
0 0 0 0 CLOSED MEMBER ONLINE NORMAL UNKNOWN System 128 0 0 0 0 QD_DATA_ED05DB01-ADM /dev/exadata_quorum/QD_DATA_ED05DB01-ADM 18-JUL-2016 18:04:16 19-JUL-2016 13:42:20 0 0 Y 512 REGULAR 0
0 1 1 0 CLOSED MEMBER ONLINE NORMAL UNKNOWN System 128 0 0 0 0 QD_DATA_ED05DB02-ADM /dev/exadata_quorum/QD_DATA_ED05DB02-ADM 18-JUL-2016 18:04:20 19-JUL-2016 13:42:20 0 0 Y 512 REGULAR 0
1 0 16777216 3915950297 CACHED MEMBER ONLINE NORMAL UNPROT CELL 6397952 6397952 6337320 0 60632 DATA_CD_00_ED05CEL01_ADM ED05CEL01_ADM DATA_CD_00_ED05CEL01_ADM o/192.168.10.5;192.168.10.6/DATA_CD_00_ed05cel01_adm 162349fb-7dfe5d21-54e96822-899c0f2e 18-JUL-2016 18:01:19 19-JUL-2016 13:42:20 0 2354 13230 0 0 0 0 2.346506 3.41796 1189239808 216909312 U 260651520 0 0 0 0 1159 13204 15827968 216802816 Y 512 REGULAR 0

 

Changes

 
Quorum Disk Manager Utility

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In earlier releases, when Oracle Exadata systems with fewer than 5 storage servers were deployed with HIGH redundancy, the voting disk for the cluster was created on a disk group with NORMAL redundancy. If two cells go down in such a system, the data is still preserved due to HIGH redundancy but the cluster software comes down because the voting disk is on a disk group with NORMAL redundancy.

Quorum disks enable users to deploy and leverage disks on database servers to achieve highest redundancy in quarter rack or smaller configurations. Quorum disks are created on the database servers and added into the quorum failure group.

For new systems to be configured with HIGH redundancy but having fewer than 5 storage servers, Oracle Exadata Deployment Assistant can be used to automatically create such quorum disks.

Users who have deployed such systems can use the new quorumdiskmgr utility manually. quorumdiskmgr enables you to manage quorum disks on database servers. With this utility, you can create, list, delete, and alter quorum disk configurations, targets, and devices.

 

Additional References :

 

1) Exadata 12.1.2.3.0 release and patch (21749993) <Note 2049743.1>

2) Oracle® Exadata Database Machine Maintenance Guide
12c Release 1 (12.1)
E51951-21

https://docs.oracle.com/cd/E50790_01/doc/doc.121/e51951/db_server.htm#CCHHJHGG

3) Exadata Database Machine and Exadata Storage Server Supported Versions <Note 888828.1>

4) Oracle® Exadata Database Machine System Overview
12c Release 1 (12.1)
E51953-17

http://docs.oracle.com/cd/E50790_01/doc/doc.121/e51953/app_whatsnew.htm#CEGICABI

 

 

 

Cause

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