日志错误如下
WARNING:NFS file system /archive mounted with incorrect options
WARNING:Expected NFS mount options: rsize>=16384,wsize>=16384,hard,noac/actimeo=0
Sat Sep 22 18:29:43 2012
Errors in file /home/oracle/product/admin/rac/udump/rac1_ora_23076.trc:
ORA-19504: failed to create file "/archive/1_5_794627553.dbf"
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options
Additional information: 3
ARCH: Error 19504 Creating archive log file to '/archive/1_5_794627553.dbf'
ARC2 started with pid=28, OS id=23112
Sat Sep 22 18:29:43 2012
ARC2: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
ARC0: Becoming the heartbeat ARCH
Sat Sep 22 18:29:43 2012
ARCH: Failed to archive thread 1 sequence 5 (19504)
Sat Sep 22 18:29:43 2012
Errors in file /home/oracle/product/admin/rac/udump/rac1_ora_23076.trc:
ORA-16038: log 2 sequence# 5 cannot be archived
ORA-19504: failed to create file ""
ORA-00312: online log 2 thread 1: '+DATA/rac/redo02.log'
如此可以看到是归档出现了错误。
metalink 说明如下:
Receiving error Ora-27054 When Running Rman With NFS [ID 424785.1] 转到底部
--------------------------------------------------------------------------------
修改时间:2011-11-29类型:PROBLEM状态:MODERATED优先级:3 注释 (0)
In this Document
Symptoms
Changes
Cause
Solution
References
--------------------------------------------------------------------------------
This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process and therefore has not been subject to an independent technical review.
Applies to:
Oracle Server - Enterprise Edition - Version: 10.2.0.1 and later [Release: 10.2 and later ]
Oracle Server - Enterprise Edition - Version: 10.2.0.1 and later [Release: 10.2 and later]
Information in this document applies to any platform.
***Checked for relevance on 29-Nov-2011***
Symptoms
Receiving error ora-27054 while running RMAN with NFS.
Changes
Cause
Improper NFS mount options are used. This behaviour has been observed on Solaris Linux and AIX Platforms.
BUG:5146667 ORA-27054 ERRORS WHEN RUNNING RMAN WITH NFS
Solution
Workarounds:
- Use the event 10298 (It can have a side effect of disabling direct IO on RAC using regular files on NFS mounts)
Reference : NOTE:387700.1 ORA-27054 ERRORS WHEN RUNNING RMAN WITH NFS
OR
Apply Patch 5146667
OR
- Set the mount options explictly.
Here are the mount options that need to be used for nfs volumes on Linux.
Use :
rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,vers=3,timeo=600,actimeo=0
- default rsize and wsize for NFS is 4096 Blocks
so if you have rsize=32k and wsize=32k then NFS would be able to read and write large datagram as compared to deafult one
- TCP option will make sure that your client are getting the data or not
- Hard & INTR
The program accessing a file on a NFS mounted file system will hang when the
server crashes. The process cannot be interrupted or killed unless you also specify intr. When
the NFS server is back online the program will continue undisturbed from where it was.
- actimeo is for access timeout and it should be 0
这里还有一个文章可以参考http://blog.163.com/rocolex/blog/static/6844641020102994639992/
