【11g新特性】sec_max_failed_login_attempts

(默认为10，范围为1到unlimited)这个参数以11g 新特性形式引入， 文档对它的描述是(默认为10，范围为1到unlimited)这个参数以11g 新特性形式引入， 文档对它的描述是

SEC_MAX_FAILED_LOGIN_ATTEMPTS specifies the number of authentication attempts that can be made by a client on a connection to the server process. After the specified number of failure attempts, the connection will be automatically dropped by the server process.

实际该参数只对使用了OCI 的特定程序生效，而使用SQLPLUS是无法生效的

ALTER SYSTEM SET SEC_MAX_FAILED_LOGIN_ATTEMPTS=3  COMMENT='Reduce from 10 for tighter security.'   SCOPE=SPFILE;