Team, I am continuously facing following exception in OTRS, and i am unable to track.... Anybody can suggest the root cause of this exception ? if no user access the OTRS application but still this exception is printing in error log continuously... [Sun Mar 29 17:29:53 2015] [error] [Sun Mar 29 17:29:53 2015] index.pl: DBD::mysql::st execute failed: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') AND st.queue_id IN (999999) AND sq.group_id IN (802, 807, 820, 822, 829, 876,' at line 1 at /opt/iplOTRS/bin/cgi-bin/../../Kernel/System/DB.pm line 553. [Sun Mar 29 17:29:53 2015] [error] ERROR: OTRS-CGI-10 Perl: 5.10.1 OS: linux Time: Sun Mar 29 17:29:53 2015 [Sun Mar 29 17:29:53 2015] [error] [Sun Mar 29 17:29:53 2015] [error] Message: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') AND st.queue_id IN (999999) AND sq.group_id IN (802, 807, 820, 822, 829, 876,' at line 1, SQL: 'SELECT DISTINCT count(*) FROM ticket st, queue sq WHERE sq.id = st.queue_id AND st.ticket_state_id IN ( ) AND st.queue_id IN (999999) AND sq.group_id IN (802, 807, 820, 822, 829, 876, 913) AND st.until_time <= 1427722133 LIMIT 10000' [Sun Mar 29 17:29:53 2015] [error] [Sun Mar 29 17:29:53 2015] [error] Traceback (12647): [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::System::Ticket::TicketSearch (v1.488.2.1) Line: 5136 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::Output::HTML::DashboardTicketGeneric::Run (v1.38) Line: 224 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::Modules::AgentDashboard::_Element (v1.24) Line: 458 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::Modules::AgentDashboard::Run (v1.24) Line: 307 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::System::Web::InterfaceAgent::Run (v1.58.2.1) Line: 853 [Sun Mar 29 17:29:53 2015] [error] Module: /opt/iplOTRS/bin/cgi-bin/index.pl (v1.89) Line: 45 [Sun Mar 29 17:29:53 2015] [error] [Sun Mar 29 17:29:53 2015] [error] [Sun Mar 29 17:29:53 2015] index.pl: DBD::mysql::st execute failed: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') AND st.responsible_user_id IN (16) AND sq.group_id IN (802, 807, 820, 822, 82' at line 1 at /opt/iplOTRS/bin/cgi-bin/../../Kernel/System/DB.pm line 553. [Sun Mar 29 17:29:53 2015] [error] ERROR: OTRS-CGI-10 Perl: 5.10.1 OS: linux Time: Sun Mar 29 17:29:53 2015 [Sun Mar 29 17:29:53 2015] [error] [Sun Mar 29 17:29:53 2015] [error] Message: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') AND st.responsible_user_id IN (16) AND sq.group_id IN (802, 807, 820, 822, 82' at line 1, SQL: 'SELECT DISTINCT count(*) FROM ticket st, queue sq WHERE sq.id = st.queue_id AND st.ticket_state_id IN ( ) AND st.responsible_user_id IN (16) AND sq.group_id IN (802, 807, 820, 822, 829, 876, 913) AND st.until_time <= 1427722133 LIMIT 10000' [Sun Mar 29 17:29:53 2015] [error] [Sun Mar 29 17:29:53 2015] [error] Traceback (12647): [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::System::Ticket::TicketSearch (v1.488.2.1) Line: 5136 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::Output::HTML::DashboardTicketGeneric::Run (v1.38) Line: 224 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::Modules::AgentDashboard::_Element (v1.24) Line: 458 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::Modules::AgentDashboard::Run (v1.24) Line: 307 [Sun Mar 29 17:29:53 2015] [error] Module: Kernel::System::Web::InterfaceAgent::Run (v1.58.2.1) Line: 853 [Sun Mar 29 17:29:53 2015] [error] Module: /opt/iplOTRS/bin/cgi-bin/index.pl (v1.89) Line: 45 [Sun Mar 29 17:29:53 2015] [error] -- -- *Best Regards* *Ali Umair*