如何解决安装oracle11g grid时报错Failed to create keys in the OLR, rc = 127的问题

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安装11.2.0.4 rac 的grid集群时，到执行/u01/app/11.2.0/grid/root.sh脚本时，报错如下：

PerfORMing root user operation for Oracle 11g 

The following environment variables are set as:
    ORACLE_OWNER= grid
    ORACLE_HOME=  /u01/app/11.2.0/grid
Enter the full pathname of the local bin directory: [/usr/local/bin]: 
   Copying dbhome to /usr/local/bin ...
   Copying oraenv to /usr/local/bin ...
   Copying coraenv to /usr/local/bin ...

Creating /etc/oratab file...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params
Creating trace directory
User ignored Prerequisites during installation
Installing Trace File Analyzer
Failed to create keys in the OLR, rc = 127, Message:
  /u01/app/11.2.0/grid/bin/clscfg.bin: error while loading shared libraries: libcap.so.1: cannot open shared object file: No such file or directory 

Failed to create keys in the OLR at /u01/app/11.2.0/grid/crs/install/crsconfig_lib.pm line 7660.
/u01/app/11.2.0/grid/perl/bin/perl -I/u01/app/11.2.0/grid/perl/lib -I/u01/app/11.2.0/grid/crs/install /u01/app/11.2.0/grid/crs/install/rootcrs.pl execution failed

解决方法：

[root@rac1 /]# cd lib64/
[root@rac1 lib64]# ls -lrt libcap*
-rwxr-xr-x. 1 root root 18672 Nov  5  2010 libcap-ng.so.0.0.0
-rwxr-xr-x. 1 root root 19016 Aug 23  2011 libcap.so.2.16
lrwxrwxrwx. 1 root root    14 Jun 19 19:25 libcap.so.2 -> libcap.so.2.16
lrwxrwxrwx. 1 root root    18 Jun 19 19:26 libcap-ng.so.0 -> libcap-ng.so.0.0.0
[root@rac1 lib64]# ls -lrt libcap.so.2
lrwxrwxrwx. 1 root root 14 Jun 19 19:25 libcap.so.2 -> libcap.so.2.16
[root@rac1 lib64]# ln -s libcap.so.2.16  libcap.so.1
[root@rac1 grid]# ./root.sh
Performing root user operation for Oracle 11g 


The following environment variables are set as:
    ORACLE_OWNER= grid
    ORACLE_HOME=  /u01/app/11.2.0/grid


Enter the full pathname of the local bin directory: [/usr/local/bin]: 
The contents of "dbhome" have not changed. No need to overwrite.
The contents of "oraenv" have not changed. No need to overwrite.
The contents of "coraenv" have not changed. No need to overwrite.


Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_params
User ignored Prerequisites during installation
Installing Trace File Analyzer
OLR initialization - successful
  root wallet
  root wallet cert
  root cert export
  peer wallet
  profile reader wallet
  pa wallet
  peer wallet keys
  pa wallet keys
  peer cert request
  pa cert request
  peer cert
  pa cert
  peer root cert TP
  profile reader root cert TP
  pa root cert TP
  peer pa cert TP
  pa peer cert TP
  profile reader pa cert TP
  profile reader peer cert TP
  peer user cert
  pa user cert
Adding Clusterware entries to upstart
CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1'
CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1'
CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.CSSdmonitor' on 'rac1'
CRS-2672: Attempting to start 'ora.gipcd' on 'rac1'
CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded
CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded
CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded


ASM created and started successfully.


Disk Group OCR created successfully.


clscfg: -install mode specified
Successfully accumulated necessary OCR keys.
Creating OCR keys for user 'root', privgrp 'root'..
Operation successful.
CRS-4256: Updating the profile
Successful addition of voting disk b1c0569300c04f32bf16835a42fa90cc.
Successful addition of voting disk a851aee2f5d84f5abf627838aa51249b.
Successful addition of voting disk 36c7d8d9df714f2cbfd469472d816011.
Successfully replaced voting disk group with +OCR.
CRS-4256: Updating the profile
CRS-4266: Voting file(s) successfully replaced
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
 1. ONLINE   b1c0569300c04f32bf16835a42fa90cc (/dev/raw/raw1) [OCR]
 2. ONLINE   a851aee2f5d84f5abf627838aa51249b (/dev/raw/raw2) [OCR]
 3. ONLINE   36c7d8d9df714f2cbfd469472d816011 (/dev/raw/raw3) [OCR]
Located 3 voting disk(s).
CRS-2672: Attempting to start 'ora.asm' on 'rac1'
CRS-2676: Start of 'ora.asm' on 'rac1' succeeded
CRS-2672: Attempting to start 'ora.OCR.dg' on 'rac1'
CRS-2676: Start of 'ora.OCR.dg' on 'rac1' succeeded
Configure Oracle Grid Infrastructure for a Cluster ... succeeded

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