--查詢鎖表
select s.sid,
       s.machine,
       l.oracle_username,
       l.locked_mode,
       S.osuser,
       'ALTER SYSTEM KILL SESSION ''' || s.sid || ', ' || s.serial# ||
       ''';' Command,
       s.LOGON_TIME
  from v$locked_object l, v$session s, all_objects o
 where l.session_id = s.sid
   and l.object_id = o.object_id
 order by s.LOGON_TIME;

--數據庫空間使用
SELECT a.tablespace_name 表空間名,
       total 表空間大小,
       free 表空間剩余大小,
       (total - free) 表空間使用大小,
       ROUND((total - free) / total, 4) * 100 使用率
  FROM (SELECT tablespace_name, ROUND(SUM(bytes) / (1024 * 1024), 4) free
          FROM DBA_FREE_SPACE
         GROUP BY tablespace_name) a,
       (SELECT tablespace_name, ROUND(SUM(bytes) / (1024 * 1024), 4) total
          FROM DBA_DATA_FILES
         GROUP BY tablespace_name) b
 WHERE a.tablespace_name = b.tablespace_name;

刪除物化視圖 drop materialized view view_disease
刷新物化視圖 命令窗口：
exec dbms_mview.refresh('view_disease','C');

create user hpas_js identified by 123456; 
grant connect , resource,dba to hpas_js;
imp  username/password@localhost/orcl file='E:\*.dmp' full=y;
exp:
C:\Users\Administrator>imp gl_platform/123pt456@172.29.81.211/orcl file='E:\why1020\apache-tomcat-8.5.31-ynjx\hpas_cs.dmp' full=y；

導出例子：
exp hpas_gl/123456@127.0.0.1:1522/orcl tables=(BCB_FOLLOWUP,BCB_MEDICATION,BCB_PATIENTS,BCB_SCREEREPORT,BCB_TEMP,BCB_TREATMENT) file=E:\why1020\bcb_tables.dmp 
導入例子：
imp hpas_gl/123456@172.29.81.211/orcl file=E:\why1020\bcb_tables.dmp full=y

遠程連接plsql;
> sqlplus /nolog;
SQL> conn username/password@ip:port/orcl;