默认情况下oracle 数据库安装完成后，用户的密码有效期为180天，如果密码过期失效会影响业务运行，所以要修改为不限制
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Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0
Connected as hml
SQL> select username,profile from dba_users; **查看用户使用的配置文件
USERNAME PROFILE
------------------------------ ------------------------------
HML DEFAULT
SCOTT DEFAULT
GOLDENGATE DEFAULT
ORACLE_OCM DEFAULT
XS$NULL DEFAULT
MDDATA DEFAULT
DIP DEFAULT
APEX_PUBLIC_USER DEFAULT
SPATIAL_CSW_ADMIN_USR DEFAULT
SPATIAL_WFS_ADMIN_USR DEFAULT
DBSNMP MONITORING_PROFILE
SYSMAN DEFAULT
FLOWS_FILES DEFAULT
MDSYS DEFAULT
ORDSYS DEFAULT
EXFSYS DEFAULT
WMSYS DEFAULT
APPQOSSYS DEFAULT
APEX_030200 DEFAULT
OWBSYS_AUDIT DEFAULT
USERNAME PROFILE
------------------------------ ------------------------------
ORDDATA DEFAULT
CTXSYS DEFAULT
ANONYMOUS DEFAULT
XDB DEFAULT
ORDPLUGINS DEFAULT
OWBSYS DEFAULT
SI_INFORMTN_SCHEMA DEFAULT
OLAPSYS DEFAULT
MGMT_VIEW DEFAULT
SYS DEFAULT
SYSTEM DEFAULT
OUTLN DEFAULT
32 rows selected
SQL> select * from dba_profiles s where s.profile='DEFAULT' and resource_name='PASSWORD_LIFE_TIME'; ***查看DEFAULT配置文件中密码生命周期
PROFILE RESOURCE_NAME RESOURCE_TYPE LIMIT
------------------------------ -------------------------------- ------------- ----------------------------------------
DEFAULT PASSWORD_LIFE_TIME PASSWORD 180
SQL> alter profile default limit PASSWORD_LIFE_TIME UNLIMITED; ****需要修改为不限制
Profile altered
SQL> select * from dba_profiles s where s.profile='DEFAULT' and resource_name='PASSWORD_LIFE_TIME'; ***验证查看DEFAULT配置文件中密码生命周期
PROFILE RESOURCE_NAME RESOURCE_TYPE LIMIT
------------------------------ -------------------------------- ------------- ----------------------------------------
DEFAULT PASSWORD_LIFE_TIME PASSWORD UNLIMITED
SQL>