[help] problems: libpthread.so.0 with help documentation!

Hi,all

I had installed cadence ic610 on openSUSE11.1. After I launched cadence, in the main interface virtuoso@6.1.0, I can’t open the documentation under the menu of help. When click it, it shows a frame as follows,

Some Cadence online documentation files are missing or can not opened duo to an error.
To start the Cadence documentation system, type cdsdoc at a system prompt.

In the same time, something below shows in the terminal:

/home/eda/ic610/tools/cdsdoc/bin/obServer: error while loadingsharedlibraries: libnsl.so.1: cannot open shared object file: No suchfile ordirectory
obApi: unable to contact /home/eda/ic610/tools/bin/obServer.

I input the command cdsdoc according to the shows,

@:~> cdsdoc
/home/eda/mmsim61/tools/jre/bin/java: error while loading shared libraries: libpthread.so.0: cannot open shared object file: No such file or directory
I put alias in .bashrc, cdsbook=’$CDS_ROOT/tools/bin/cdsdoc’,then input cdsbook,

@:~> cdsbook
/home/eda/ic610/tools/jre/bin/java: error while loading shared libraries: libpthread.so.0: cannot open shared object file: No such file or directory

How can I deal with it, please help me, thank you very much!