Oracle trigger

CREATE OR REPLACE TRIGGER my_schema.trigger_name AFTER LOGON ON DATABASE
BEGIN
    INSERT INTO my_log_table
    VALUES (USER AS CONNECTED_USER,
        sys_context('USERENV', 'SESSIONID') AS SESSION_ID,
        substr(sys_context('USERENV', 'OS_USER'), 1, 50) AS OS_USER,
        substr(sys_context('USERENV', 'HOST'), 1, 30) AS HOST,
        SYSDATE AS LOGON_DATE);
END;
ALTER TRIGGER my_schema.trigger_name ENABLE;

Oracle compile trigger

alter trigger MY_SCHEMA.TRIGGER_NAME compile;

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