常使用的Orcale命令

su - oracle

sqlplus / as sysdba

shutdown immediate;
// 启动数据库
startup nomount;
alter database mount;
alter database open;

// 查询表空间文件
select file_name,tablespace_name,bytes/(1024*1024) from dba_data_files
where tablespace_name = 'TBS_DATA_SIG_USER_RPT1';

// 查询每一个表空间的大小和使用
select fs.tablespace_name "Tablespace",
    (df.totalspace - fs.freespace) "Used MB",
    fs.freespace "Free MB",
    df.totalspace "Total MB",
    round(100 * (fs.freespace / df.totalspace)) "Pct. Free"
from
    (select tablespace_name,
        round(sum(bytes) / 1048576) TotalSpace
      from dba_data_files
      group by tablespace_name) df,
    (select tablespace_name,
        round(sum(bytes) / 1048576) FreeSpace
      from dba_free_space
      group by tablespace_name) fs
where df.tablespace_name = fs.tablespace_name;

// 重置表空间
Alter database datafile '/opt/oracle/oradata/tbs_data_public/tbs_data_sig_user_rpt1_01.dbf'  resize 500m;
Alter database datafile '/opt/oracle/oradata/tbs_data_public/tbs_data_sig_user_rpt2_01.dbf'  resize 500m;
Alter database datafile '/opt/oracle/oradata/tbs_data_public/tbs_data_sig_user_rpt3_01.dbf'  resize 500m;
Alter database datafile '/opt/oracle/oradata/tbs_data_public/tbs_data_sig_user_rpt5_01.dbf'  resize 500m;



  9 查锁
  select l.session_id sid,l.locked_mode lockmode,l.oracle_username db_user,l.os_user_name os_user,s.machine,s.schemaname,o.object_name tablename,q.sql_text
  from v$locked_object l, v$session s, v$sql q, all_objects o
where l.session_id = s.sid
   and s.type = 'USER' and s.sql_address = q.address and l.object_id = o.object_id
10 杀锁
   alter system kill session 'sid,SERIAL#'

su - oracle

// 启动监听程序
lsnrctl start