今天在
虚拟机环境下做实验，在将rac环境修改为flashback on时，报出了ORA-27054错误，错误代码如下：
Errors in file /u01/app/oracle/admin/racdb/udump/racdb2_ora_25551.trc:
ORA-38701: Flashback database log 2 seq 1 thread 2: "/u01/flashback/RACDB/flashback/o1_mf_%u_.flb"
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options? 从错误描述可以看出，闪回目录是通过nfs文件系统来实现的，而系统挂载nfs时，采用了错误的参数选项，导致oracle报错。上网查资料，通过文档359515.1顺利解决问题。整理部分内容如下：
RAC In the table below
Binaries is the shared mount points where the Oracle Home and CRS_HOME is installed.
Datafiles includes Online Logs, Controlfile and Datafiles
| Operating System |
Mount options for Binaries |
Mount options for Oracle Datafiles |
Mount options for CRS Voting Disk and OCR |
| Sun Solaris * |
rw,bg,hard,nointr,rsize=32768, wsize=32768,proto=tcp, noac,vers=3,suid |
rw,bg,hard,nointr,rsize=32768, wsize=32768,proto=tcp,noac, forcedirectio, vers=3,suid |
rw,bg,hard,nointr,rsize=32768, wsize=32768,proto=tcp,vers=3, noac,forcedirectio |
| AIX (5L) ** |
rw,bg,hard,nointr,rsize=32768, wsize=32768,proto=tcp,vers=3, timeo=600 |
cio,rw,bg,hard,nointr,rsize=32768, wsize=32768,proto=tcp,noac, vers=3,timeo=600 |
cio,rw,bg,hard,intr,rsize=32768, wsize=32768,tcp,noac, vers=3,timeo=600 |
| HPUX 11.23 **** – |
rw,bg,vers=3,proto=tcp,noac, hard,nointr,timeo=600, rsize=32768,wsize=32768,suid |
rw,bg,vers=3,proto=tcp,noac, forcedirectio,hard,nointr,timeo=600, rsize=32768,wsize=32768,suid |
rw,bg,vers=3,proto=tcp,noac, forcedirectio,hard,nointr,timeo=600 ,rsize=32768,wsize=32768,suid |
| Linux x86 # |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp, vers=3, timeo=600, actimeo=0 |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,actimeo=0, vers=3,timeo=600 |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,noac,vers=3, timeo=600 |
| Linux x86-64 # |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,vers=3, timeo=600, actimeo=0 |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,actimeo=0, vers=3,timeo=600 |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,vers=3, timeo=600,noac |
| Linux – Itanium |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,vers=3, timeo=600, actimeo=0 |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,actimeo=0, vers=3,timeo=600 |
rw,bg,hard,nointr,rsize=32768, wsize=32768,tcp,noac,vers=3, timeo=600 |
* NFS mount option “forcedirectio” is required on Solaris platforms when mounting the OCR/CRS files when using Oracle 10.1.0.4 or 10.2.0.2 or later (Oracle unpublished bug 4466428)
** AIX is only supported with NAS on AIX 5.3 TL04 and higher with Oracle 10.2.0.1 and later (NetApp)
*** NAS devices are only supported with HPUX 11.23 or higher ONLY
# These mount options are for Linux kernels 2.6 and above for older kernels please check Note 279393.1 Due to Unpublished bug 5856342, it is necessary to use the following init.ora parameter when using NAS
with all versions of RAC on Linux (x86 & X86-64 platforms) until 10.2.0.4. This bug is fixed and included in 10.2.0.4 patchset.
filesystemio_options = DIRECTIO
Single Instance
| Operating System |
Mount options for Binaries |
Mount options for Oracle Datafiles |
| Sun Solaris * (8, 9, 10) |
rw,bg,hard,rsize=32768, wsize=32768,vers=3,nointr, proto=tcp,suid |
rw,bg,hard,rsize=32768, wsize=32768,vers=3,[forcedirectio or llock], nointr,proto=tcp,suid |
| AIX (5L) ** |
rw,bg,hard,rsize=32768, wsi |
|