ExaData一体机重启步骤
5墨值下载
How to Safely Reboot Exadata Machine
大致步骤：
停计算节点的实例、集群
重启存储节点、确认状态
重启计算节点、确认状态
There are times, you need to reboot your Exadata machine. Since Exadata machine
has many components like compute nodes, storage nodes and network devices,
rebooting Exadata machine is little different than rebooting any other database
host. It is important to follow a sequence presented in this blog and make sure
to have proper approvals for rebooting Exadata machine. It is also important to
understand that you will lose all of your storage indexes, flash cache and it
will take some time for Exadata machine to recreate them once it’s back online.
If your application is heavily dependent on storage indexes and flash cache, you
might experience some performance issues for next few hours after the reboot.
Plan
Take a snap shot of all the services running on Exadata Machine
Review /etc/oratab file and make sure all the instances are define properly
Review storage cell services
Check ASM disk groups and disks statuses
Make sure you have approved change request to reboot Exadata machine
Alert owners and users of Exadata machine about this reboot before hand
Blackout OEM monitoring for target Exadata Machine
Stop all database instances
Stop all the db’s using SRVCTL command
Srvctl stop database –d <XYZ>
Stop CRS service
Stop Oracle Cluster CRS using the Following command as Root user
GRID_HOME/grid/bin/crsctl stop cluster all
Check if all the services are stopped gracefully otherwise user –f option to
stop them forcefully
GRID_HOME/grid/bin/crsctl stop cluster all –f
Reboot Storage Cells
Once CRS and databases are down you can reboot Storage cells using the following
Command as root user from any compute node
dcli -l root -g cell_group shutdown -r -y now
Note: – Above command will require root user equivalence being setup between all
nodes and cell_group being created, otherwise login to each storage node as root
user and execute the following command
shutdown -r -y now
Verify all the storage cells are back up successfully using following commands
dcli –l root –g cell_group uptime
dcli –l root –g cell_group “su – celladmin –c\”cellcli –e list cell detail \”” |
grep Status;
Reboot Compute Nodes
Reboot compute nodes using the following Command as root user from any compute
node
dcli -l root -g dbs_group shutdown -r -y now
Note: – Above command will require root user equivalence being setup between all
nodes and dbs_group being created, otherwise login to each compute node as root
user and execute the following command
shutdown -r -y now
Verify all the storage cells are back up successfully using following commands
dcli –l root –g dbs_group uptime
Verify CRS and databases
Verify CRS services using the following command as root user
GRID_HOME/grid/bin/crsctl stat res -t
Verify all the database instances came back up online
dcli -l root –g dbs_group ps -ef | grep smon
http://blog.umairmansoob.com/how-to-safely-reboot-exadata-machine/
of 2
5墨值下载
【版权声明】本文为墨天轮用户原创内容，转载时必须标注文档的来源（墨天轮），文档链接，文档作者等基本信息，否则作者和墨天轮有权追究责任。如果您发现墨天轮中有涉嫌抄袭或者侵权的内容，欢迎发送邮件至：contact@modb.pro进行举报，并提供相关证据，一经查实，墨天轮将立刻删除相关内容。
下载排行榜
评论