FAILED_LOGIN_ATTEMPTS Specify the number of failed attempts to log in to the user account before the account is locked. If you omit this clause, then the default is 10 times.
PASSWORD_LIFE_TIME Specify the number of days the same password can be used for authentication. If you also set a value for PASSWORD_GRACE_TIME, then the password expires if it is not changed within the grace period, and further connections are rejected. If you omit this clause, then the default is 180 days.
PASSWORD_REUSE_TIME and PASSWORD_REUSE_MAX These two parameters must be set in conjunction with each other. PASSWORD_REUSE_TIME specifies the number of days before which a password cannot be reused. PASSWORD_REUSE_MAX specifies the number of password changes required before the current password can be reused. For these parameter to have any effect, you must specify a value for both of them.
If you specify a value for both of these parameters, then the user cannot reuse a password until the password has been changed the number of times specified for PASSWORD_REUSE_MAX during the number of days specified for PASSWORD_REUSE_TIME.
For example, if you specify PASSWORD_REUSE_TIME to 30 and PASSWORD_REUSE_MAX to 10, then the user can reuse the password after 30 days if the password has already been changed 10 times.
If you specify a value for either of these parameters and specify UNLIMITED for the other, then the user can never reuse a password.
If you specify DEFAULT for either parameter, then Oracle Database uses the value defined in the DEFAULT profile. By default, all parameters are set to UNLIMITED in the DEFAULT profile. If you have not changed the default setting of UNLIMITED in the DEFAULT profile, then the database treats the value for that parameter as UNLIMITED.
If you set both of these parameters to UNLIMITED, then the database ignores both of them. This is the default if you omit both parameters.
PASSWORD_LOCK_TIME Specify the number of days an account will be locked after the specified number of consecutive failed login attempts. If you omit this clause, then the default is 1 day.
PASSWORD_GRACE_TIME Specify the number of days after the grace period begins during which a warning is issued and login is allowed. If you omit this clause, then the default is 7 days.
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