Message Oracle PGA-22008 - password length of number is invalid; maximum length is number

ERROR	password length of number is invalid; maximum length is number
CAUSE	The password is too long to be used. The maximum allowable length for the password is characters.
ACTION	The password must be changed to a shorter value for OCI logon to the table PGA_TCP_IMSC. Refer to the Oracle Database Gateway Installation and Configuration Guide for the required gateway initialization parameters for gateways using TCP/IP.