Unable to load dynamic library ‘/usr/lib64/php/modules/oci8.so’ – libclntsh.so.11.1

After fixed error in invoking target ‘mkldflags ntcontab.o nnfgt.o’ on Oracle Database 11g R2 64 bit. Later it is about the web/application servers, install apache and php5 standard modules and connect from PHP to oracle via OCI8 package.

At first you must installed php-pear package before using pecl install oci8 command.

Problem

There is no OCI8 entry in phpinfo() output, but php -i on command line found OCI8 module.
The Loaded Configuration File of phpinfo() and php-i point at the same path : : /etc/php.ini .

OCI8 Support => enabled
Version => 1.4.9
Revision => $Id: e2241cffb72c940cb2ca267b7a6a0ce436de7e5e $
Active Persistent Connections => 0
Active Connections => 0
Oracle Run-time Client Library Version => 11.2.0.1.0
Oracle Version => 11.2
Compile-time ORACLE_HOME => /u01/app/oracle/product/11.2.0/dbhome_1
Libraries Used => -Wl,-rpath,/u01/app/oracle/product/11.2.0/dbhome_1/lib -L/u01/app/oracle/product/11.2.0/dbhome_1/lib -lclntsh
Temporary Lob support => enabled
Collections support => enabled

Directive => Local Value => Master Value
oci8.max_persistent => -1 => -1
oci8.persistent_timeout => -1 => -1
oci8.ping_interval => 60 => 60
oci8.privileged_connect => Off => Off
oci8.statement_cache_size => 20 => 20
oci8.default_prefetch => 100 => 100
oci8.old_oci_close_semantics => Off => Off
oci8.connection_class => no value => no value
oci8.events => Off => Off

When checked the apache error log file in /var/log/httpd/error_log — got warning message :

PHP Warning:  PHP Startup: Unable to load dynamic library ‘/usr/lib64/php/modules/oci8.so’ – libclntsh.so.11.1: cannot open shared object file: No such file or directory in Unknown on line 0

Solution

However, as I said, there is no OCI8 entry in phpinfo() output and found OCI8 module at php command line.
Think about oracle environments missing as following:

• when you install OCI8 by using pecl command , don’t forget oracle envs in ~/.bash_profile of root user
• Put oracle environments in the apache configuration settings file, /etc/sysconfig/httpd

Go down to Installation Task to see oracle environments of 2 sections above !

Before Installation Task

SELinux

Before the installation I disabled SELinux by edit config file (basic change) and restart to take effect.

The file content is something similar to the following :

Comment SELINUX=enforcing and copy to new line, and change value to disabled
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing – SELinux security policy is enforced.
# permissive – SELinux prints warnings instead of enforcing.
# disabled – No SELinux policy is loaded.
#SELINUX=enforcing
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted – Targeted processes are protected,
# mls – Multi Level Security protection.
SELINUXTYPE=targeted

Reboot system !

php-pear is installed or not ?

Loaded plugins: refresh-packagekit, rhnplugin
This system is not registered with RHN.
RHN support will be disabled.
Installed Packages
php-pear.noarch                       1:1.9.4-4.el6                        @base

if not install used yum install php-pear or rpm -ivh command that you bold.

Installation Tasks

Edit root ~/.bash_profile

# ORACLE ENVIRONMENTS
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1
LD_LIBRARY_PATH=/u01/app/oracle/product/11.2.0/dbhome_1/lib:/app/oracle/product/11.2.0/dbhome_1/oracm/lib:/lib:/usr/ilib:/usr/local/lib
LD_LIBRARY_PATH64=/u01/app/oracle/product/11.2.0/dbhome_1/lib:/app/oracle/product/11.2.0/dbhome_1/oracm/lib:/lib:/usr/lib:/usr/local/lib
TNS_ADMIN=/u01/app/oracle/product/11.2.0/dbhome_1/network/admin
NLS_LANG=AMERICAN_AMERICA.TH8TISASCII

Logout and Login again to read new environment parameters

or run above command to read new parameters.

Install oci8

Build process completed successfully
Installing ‘/usr/lib64/php/modules/oci8.so’
install ok: channel://pecl.php.net/oci8-1.4.9
configuration option “php_ini” is not set to php.ini location
You should add “extension=oci8.so” to php.ini

Create new file /etc/php.d/oci8.ini

[code]
; Enable oci8 extension module
extension=oci8.so
[/code]

Oracle environment variables for Apache

Here is what I added at the end of the file /etc/sysconfig/httpd

# ORACLE ENVIRONMENTS
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1
LD_LIBRARY_PATH=/u01/app/oracle/product/11.2.0/dbhome_1/lib:/app/oracle/product/11.2.0/dbhome_1/oracm/lib:/lib:/usr/lib:/usr/local/lib
LD_LIBRARY_PATH64=/u01/app/oracle/product/11.2.0/dbhome_1/lib:/app/oracle/product/11.2.0/dbhome_1/oracm/lib:/lib:/usr/lib:/usr/local/lib
TNS_ADMIN=/u01/app/oracle/product/11.2.0/dbhome_1/network/admin
NLS_LANG=AMERICAN_AMERICA.TH8TISASCII

Once this is done, restart httpd

If everything went well, normally you will see the OCI8 entry if you run phpinfo() in a test PHP script on webpage.
Hope this may help my online IT friends !