Session: connection failed

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/omtools/public_html/secure/billingMostRecent/include/misc/mod_adodb/adodb.inc.php:377) in /home/omtools/public_html/secure/billingMostRecent/include/functions.inc.php on line 112
[SQL Error] SELECT * FROM config ORDER BY config_type Access denied for user 'omtools_mb'@'localhost' to database 'omtools_billing'