Error :-
Getting following error whenever you access PhpMyAdmin either from WHM or cPanel.

Warning: session_start() [function.session-start]: SQLite: failed to
open/create session database
`/var/cpanel/userhomes/cpanelphpmyadmin/sessions/phpsess.sdb' - unable
to open database:
/var/cpanel/userhomes/cpanelphpmyadmin/sessions/phpsess.sdb in
/usr/local/cpanel/base/3rdparty/phpMyAdmin/libraries/session.inc.php on
line 86

Fatal error: session_start() [<a
href='function.session-start'>function.session-start</a>]:
Failed to initialize storage module: sqlite (path:
/var/cpanel/userhomes/cpanelphpmyadmin/sessions/phpsess.sdb) in
/usr/local/cpanel/base/3rdparty/phpMyAdmin/libraries/session.inc.php on
line 86

Cause :-
This is usually a bug in the PhpMyAdmin configuration on cPanel server.

Solution :-
Manually edit /usr/local/cpanel/3rdparty/etc/phpmyadmin/php.ini file as follow:

1) Login to shell of the server using root login details and open the file “/usr/local/cpanel/3rdparty/etc/phpmyadmin/php.ini” using vi or any other editor.

2) Search for the [Session] variable & underneath it, change the following
Replace:
——————————-
session.save_handler = sqlite
session.save_path = /var/cpanel/userhomes/cpanelphpmyadmin/sessions/phpsess.sdb
——————————-
To:
——————————-
session.save_handler = files
session.save_path = /tmp
——————————-
By default, PhpMyAdmin uses sqlite as as the file handler, but it needs to be changed to files & the location of the session files to be stored needs to be changed to /tmp which is the standard/default place to store temporary files.

3) Once all changes done, save & exit the php.ini file & restart the apache using “/scripts/restartsrv_httpd“.

4) Also ‘chattr’ the file “/usr/local/cpanel/3rdparty/etc/phpmyadmin/php.ini” so that it doesn’t get reverted back to original whenever cPanel updates run.