Failed to connect to MySQL: Too many connections

Error : select * from tb_web_config where web_config_id = '1'

Error : select cate_file_id,cate_file_name,cate_file_type_id,show_design from tb_file_download_cate where cate_file_id in(select cate_file_id from tb_file_download_cate where cate_file_type_id = 'T04') order by cate_sort asc

Errors : select file_id from tb_file_download where 1=1 and cate_file_id = 'C40'

MSG:

Errors : select file_id,file_title,file_source,date_save,download_times from tb_file_download where 1=1 and cate_file_id = 'C40' order by file_id desc limit 0,25

MSG:

Error : select news_id,news_name,language_id,news_scope,news_user_update,news_date_update,news_views from tb_news where news_draft_status = 'N' order by news_date_update desc limit 0,4

Error : select poll_id,poll_question from tb_poll_question where poll_use_status = 'Y' and language_id = 'th'