Symptom
- Unable to login to FMC UI and receive error "The server response was not understood. Please contact support."
Conditions
- Attempting to login to FMC UI
Workaround
- Restart processes on the FMC via CLI. Example below:
> expert
admin@firepower:~$ sudo su
Password:
root@firepower:/Volume/home/admin# /etc/rc.d/init.d/console restart
Further Problem Description
- Under mojo.log (/var/log/mojo/mojo.log) the below logs are seen:
[2022-10-22 09:59:21.33774] [20980] [error] bless( {
'-file' => '/usr/local/sf/lib/perl/5.24.4/SF/Permission.pm',
'-text' => 'Database Error 1206:The total number of locks exceeds the lock table size', <<<<<<<<<
'-package' => 'SF::Permission',
'-line' => 1462,
'-stacktrace' => 'Database Error 1206:The total number of locks exceeds the lock table size at /usr/local/sf/lib/perl/5.24.4/SF/Permission.pm line 1462. <<<<<<<<
SF::Permission::setLastLogin("", "") called at /usr/local/sf/lib/perl/5.24.4/SF/Auth.pm line 429
>>
[2022-10-22 09:59:21.35692] [20980] [error] Caught exception
[2022-10-22 09:59:21.40759] [20980] [debug] Rendering template "exception.production.html.ep"
[2022-10-22 09:59:21.47471] [20980] [debug] 500 Internal Server Error (5.262953s, 0.190/s)
[2022-10-22 09:59:21.47480] [20980] [debug] after dispatch worker inspection
[2022-10-22 09:59:21.47485] [20980] [info] exception template has been used, ending worker 20980 gracefully
