The embodiment of the application discloses a database alarming method and device and a terminal. The device includes an information table, which is used for storing client information and/or client user information; a first trigger, which is used for triggering calling of a system function to acquire the client information and/or the client user information when a client user logs in a database,and inputting the client information and/or the client user information into the preset information table; and a second trigger, which is used for triggering scanning on the information table, and sending abnormal information to an information security administrator if the abnormal information exists in the information table. In the embodiment of the application, the information table used for specifically storing the client information and/or the client user information is created, the client information and/or the client user information are/is acquired through calling the system function, the acquired information is input into the information table, a process cannot interfere with a service table in a database system, and service performance impacts on the database system are lower.