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Oracle数据库表空间容量调整脚本

时间:2021-07-01 10:21:17 帮助过:26人阅读

(表空间缩容脚本)] --1、获取需要释放空间的表空间信息(包含oracle database自有表空间) --drop table system.tbs_detail; create table system.tbs_detail as select a.tablespace_name, a.bytes/1024/1024 Sum_MB, (a.bytes-b.bytes)/1024/1024 used_MB, b

  (表空间缩容脚本)]

  --1、获取需要释放空间的表空间信息(包含oracle database自有表空间)

  --drop table system.tbs_detail;

  create table system.tbs_detail as select

  a.tablespace_name,

  a.bytes/1024/1024 "Sum_MB",

  (a.bytes-b.bytes)/1024/1024 "used_MB",

  b.bytes/1024/1024 "free_MB",

  round(((a.bytes-b.bytes)/a.bytes)*100,2) "percent_used"

  from

  (select tablespace_name,sum(bytes) bytes from dba_data_files group by tablespace_name) a,

  (select tablespace_name,sum(bytes) bytes,max(bytes) largest from dba_free_space group by tablespace_name) b

  where a.tablespace_name=b.tablespace_name

  order by ((a.bytes-b.bytes)/a.bytes) desc;

  --select * from system.tbs_detail order by "Sum_MB" desc,"free_MB" desc;

  --2、获取需要释放空间的应用表空间数据文件使用情况

  --drop table system.datafile_space;

  create table system.datafile_space as

  select a.TABLESPACE_NAME,

  a.FILE_NAME,

  a.BYTES / 1024 / 1024 total,

  b.sum_free / 1024 / 1024 free

  from dba_data_files a,

  (select file_id, sum(bytes) sum_free

  from dba_free_space

  group by file_id) b

  where a.FILE_ID = b.file_id

  and a.TABLESPACE_NAME in (select tablespace_name

  from system.tbs_detail

  where (tablespace_name like '%CQLT%' or

  tablespace_name like '%CQST%'

  or tablespace_name like 'TS%' or tablespace_name like 'IDX%'

  or tablespace_name like '%HX%')

  and "Sum_MB" > 100);

  --select * from system.datafile_space;

  --3、生成数据文件大小重置脚本,,在每个数据文件当前实际使用空间大小基础上增加 100m 空间

  select 'alter database datafile ''' || file_name || ''' resize ' ||

  round(to_number(total - free + 100),0) || ' M;'

  from system.datafile_space;

  --查看 ASM 磁盘组使用情况

  sqlplus / as sysdba <

  set feed off

  set linesize 200

  set pagesize 200

  set echo off

  spool /home/oracle/check_log/chktbs.log append

  select name,state,type,total_mb,free_mb from v$asm_diskgroup;

  spool off

  quit

  EOF

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