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[Oracle] Oracle 统计用户下表的数据量实现脚本

数据库 数据库 发布于:2021-10-16 14:00 | 阅读数:333 | 评论:0

要想统计用户下所有表的数据量,可以查看user_tables,此表里面是统计信息,当然这个可能不太准,要想非常精确,需要直接count表。下面的脚本有异常不中断,可以重复执行的特点。
create table bk_count_tables
(
 owner VARCHAR2(30),
 table_name VARCHAR2(30),
 part_col varchar2(100),--分区字段
 row_s number,
 gather_time date
);
create index ind_bct_own_table on bk_count_tables(owner,table_name);
set serveroutput on
declare
cursor c_cursor is select s.OWNER, s.TABLE_NAME, col.column_name part_col
  from dba_tables s,
  (select owner,
    name,
    listagg(column_name, ',') within group(order by null) column_name
    from (select owner, name, column_name
      from dba_part_key_columns
     where owner in ('TEST')
      and object_type = 'TABLE'
      and name not like 'BIN$%'
     union all
     select owner, name, column_name
      from dba_subpart_key_columns
     where owner in ('TEST')
      and object_type = 'TABLE'
      and name not like 'BIN$%')
   group by owner, name) col
 where s.OWNER in ('TEST')
  and not regexp_like(table_name, '[0-9]{3,8}')
  and s.table_name not like '%BAK%'
  and s.table_name not like '%A2K%'
  and s.table_name not like 'BK%'
  and s.table_name not like 'BIN%'
  and s.OWNER = col.owner(+)
  and s.TABLE_NAME = col.name(+)
order by s.TABLE_NAME ;
c_row c_cursor%rowtype;
t_rows number;
begin
 for c_row in c_cursor loop
  begin
   execute immediate 'select count(*) from bk_count_tables where owner=:1 and TABLE_NAME=:2 and rownum=1' 
   into t_rows using c_row.OWNER,c_row.TABLE_NAME ;
   if(t_rows = 0) then 
  execute immediate 'select count(*) from "'||c_row.TABLE_NAME||'"' into t_rows;
  insert into bk_count_tables values(c_row.OWNER,c_row.TABLE_NAME,c_row.part_col,t_rows,sysdate);
  commit; 
  end if;
  EXCEPTION
   WHEN OTHERS THEN
   DBMS_OUTPUT.PUT_LINE(c_row.OWNER||'---'||c_row.TABLE_NAME);
   rollback; 
  end;
 end loop;
end;
/
总结
以上所述是小编给大家介绍的Oracle 统计用户下表的数据量实现脚本,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对CodeAE代码之家网站的支持!

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