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problems with horde

qualispace

Regular Pleskian
Hello,
I am running Plesk 7.5 Reloaded on Red Hat Linux ES 3.0. I am not able to access webmail. Whenever I try to access the webmail of any website, I get the following errors

Warning: loadprefs(/home/httpd/vhosts/webmail/horde/lib/Auth.php): failed to open stream: Too many open files in /home/httpd/vhosts/webmail/horde/lib/Registry.php on line 625

Warning: loadprefs(): Failed opening '/home/httpd/vhosts/webmail/horde/lib/Auth.php' for inclusion (include_path='/home/httpd/vhosts/webmail/horde/lib:/home/httpd/vhosts/webmail/horde/pear:.') in /home/httpd/vhosts/webmail/horde/lib/Registry.php on line 625

Warning: loadprefs(/home/httpd/vhosts/webmail/horde/lib/Prefs.php): failed to open stream: Too many open files in /home/httpd/vhosts/webmail/horde/lib/Registry.php on line 626

Warning: loadprefs(): Failed opening '/home/httpd/vhosts/webmail/horde/lib/Prefs.php' for inclusion (include_path='/home/httpd/vhosts/webmail/horde/lib:/home/httpd/vhosts/webmail/horde/pear:.') in /home/httpd/vhosts/webmail/horde/lib/Registry.php on line 626

Fatal error: Undefined class name 'auth' in /home/httpd/vhosts/webmail/horde/lib/Registry.php on line 634

Does anybody know the reason and the solution. If yes, then please help me.
 
Hello Friends,
I have tried to increase the limit for open files from the default 1024 to 4096 and restarted the httpd service. After doing so, the webmail started functioning. Can anybody tell me what should be the max limit of open files.
 
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