ORA-28000账户被锁和解锁

sqlplus "/as sysdba"
或者
sqlplus /nolog             --不在cmd或者terminal当中暴露密码的登陆方式
conn /as sysdba

查看用户信息

select username,lock_date,profile,EXPIRY_DATE from dba_users order by EXPIRY_DATE desc;

查看默认PROFILE的策略

select * from dba_profiles where profile='DEFAULT';

audit session whenever not successful;

set lines
col userhost for a20
col COMMENT$TEXT for a30
col SPARE1 for a20
col NTIMESTAMP# for a35
select sessionid,userid,userhost,comment$text,spare1,to_char(ntimestamp#+/,'yyyy-mm-dd hh24:mi:ss') from aud$ where returncode= order by ntimestamp# asc;