The following constants are used by this package.

subtype t_log_level is pls_integer; 
c_log_level_error constant t_log_level := 1; -- critical error 
c_log_level_warn constant t_log_level := 2; -- less critical error 
c_log_level_info constant t_log_level := 4; -- default level if debugging is enabled (for example, used by apex_application.debug) 
c_log_level_app_enter constant t_log_level := 5; -- application: messages when procedures/functions are entered 
c_log_level_app_trace constant t_log_level := 6; -- application: other messages within procedures/functions 
c_log_level_engine_enter constant t_log_level := 8; -- Application Express engine: messages when procedures/functions are entered 
c_log_level_engine_trace constant t_log_level := 9; -- Application Express engine: other messages within procedures/functions