install_driver(Oracle) failed: Can't load `.../DBD/Oracle/Oracle.so' for module DBD::Oracle

Description

This section is from the "Practical mod_perl " book, by Stas Bekman and Eric Cholet . Also available from Amazon: Practical mod_perl

Here's an example of the full error report that you might see:

install_driver(Oracle) failed: Can't load

'/usr/lib/perl5/site_perl/5.6.1/i386-linux/auto/DBD/Oracle/Oracle.so'

for module DBD::Oracle:

libclntsh.so.8.0: cannot open shared object file:

No such file or directory at

/usr/lib/perl5/5.6.1/i386-linux/DynaLoader.pm line 169.

at (eval 27) line 3

Perhaps a required shared

library or dll isn't installed where expected at

/usr/local/apache/perl/tmp.pl line 11



On BSD-style filesystems, LD_LIBRARY_PATH is not searched for setuid programs. If Apache is a setuid executable, you might receive this error. Therefore, the first solution is to explicitly load the library from the system-wide ldconfig configuration file:

panic# echo $ORACLE_HOME/lib >> /etc/ld.so.conf

panic# ldconfig

(使用该方法我的问题就解决了)

Another solution to this problem is to modify the Makefile file (which is created when you run perl Makefile.PL ) as follows:

Search for the line LD_RUN_PATH=

Replace it with LD_RUN_PATH=my_oracle_home/lib

where my_oracle_home is, of course, the home path to your Oracle installation. In particular, the file libclntsh.so.8.0 should exist in the lib subdirectory.

Then just type make install , and all should go well.

Note that setting LD_RUN_PATH has the effect of hardcoding the path to my_oracle_home/lib in the file Oracle.so , which is generated by DBD::Oracle . This is an efficiency mechanism, so that at runtime it doesn't have to search through LD_LIBRARY_PATH or the
default directories used by ld .

For more information, see the ld manpage and the essay on LD_LIBRARY_PATH at http://www.visi.com/~barr/ldpath.html .