​

环境

  • Red Hat Enterprise Linux 5.8
  • Oracle Applications

问题

  • In a particular instance, the following is reported by ​​ls​​ only when accessing the 'oracle' user.

​​Raw​​

[root@<hostname> oracle]# su - oracle
[oracle@<hostname> ~]$ ls
ls: error while loading shared libraries: librt.so.1: cannot open shared object file: No such file or directory

  • Other users on the system do not report any shared library files missing.

决议

  • Inside of the Oracle users ​​~/.bash_profile​​ alter the ​​LD_ASSUME_KERNEL​​ to the following:

​​Raw​​

LD_ASSUME_KERNEL=2.6.18
export LD_ASSUME_KERNEL

  • ​​su​​ to the user and verify correct operation.

根源

  • The ​​LD_ASSUME_KERNEL​​ environment variable set incorrectly in the users ​​~/.bash_profile​​ file.

诊断步骤

  • Verify that the issue only occurs for a single user when using ​​ls​​
  • Verify that the ​​ldd​​ command for the individual user reports missing libraries whereas the 'root' user will display the correct libraries as shown below:

​​Raw​​

[root@<hostname> oracle]# ldd /bin/ls
        linux-vdso.so.1 =>  (0x00007fff249fd000)
        librt.so.1 => /lib64/librt.so.1 (0x00000032b5c00000)
        libacl.so.1 => /lib64/libacl.so.1 (0x00000032b5800000)
        libselinux.so.1 => /lib64/libselinux.so.1 (0x00000032b6000000)
        libc.so.6 => /lib64/libc.so.6 (0x00000032b4800000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00000032b5400000)
        /lib64/ld-linux-x86-64.so.2 (0x00000032b4400000)
        libattr.so.1 => /lib64/libattr.so.1 (0x00000032b9800000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00000032b4c00000)
        libsepol.so.1 => /lib64/libsepol.so.1 (0x00000032b6400000)
[root@<hostname> oracle]# su - oracle
[oracle@<hostname> ~]$ ldd ls
/bin/sh: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory