RENAME方法进行分区改造

1、新建零时表

set time on timing on

create table RPTUSER.RPT_TMP_10086BDL_bak

(

HANDLEDATE DATE,

TEL_CALLING VARCHAR2(15)

) TABLESPACE "IS_IEF_CBT"

PARTITION BY RANGE ("HANDLEDATE")

( partition P201805 values less than (TO_DATE('2018-06-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201806 values less than (TO_DATE('2018-07-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201807 values less than (TO_DATE('2018-08-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201808 values less than (TO_DATE('2018-09-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201809 values less than (TO_DATE('2018-10-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201810 values less than (TO_DATE('2018-11-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201811 values less than (TO_DATE('2018-12-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201812 values less than (TO_DATE('2019-01-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201901 values less than (TO_DATE('2019-02-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201902 values less than (TO_DATE('2019-03-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201903 values less than (TO_DATE('2019-04-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201904 values less than (TO_DATE('2019-05-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201905 values less than (TO_DATE('2019-06-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201906 values less than (TO_DATE('2019-07-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201907 values less than (TO_DATE('2019-08-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201908 values less than (TO_DATE('2019-09-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201909 values less than (TO_DATE('2019-10-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201910 values less than (TO_DATE('2019-11-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201911 values less than (TO_DATE('2019-12-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition P201912 values less than (TO_DATE('2020-01-01 00:00:00','YYYY-MM-DD hh24:mi:ss')) tablespace IS_IEF_CBT,

partition pmax values less than (MAXVALUE) tablespace IS_IEF_CBT);

2、创建零时失效对象表

create table system.dba_object_20180820 as select * from dba_objects;

select count(*) from system.dba_object_20180820 where status <> 'VALID';

3、rename表

declare

begin

execute immediate 'alter table RPTUSER.RPT_TMP_10086BDL rename to RPT_TMP_10086BDL_20180820';

execute immediate 'alter table RPTUSER.RPT_TMP_10086BDL_bak rename to RPT_TMP_10086BDL';

end ;

/

4、对比是否有新增失效对象

select count(*) from system.dba_object_20180820 where status <> 'VALID'

union all

select count(*) from dba_objects where status <> 'VALID';

5、对比两个表的权限

select 'grant ' || privilege || ' on ' || owner || '.' || table_name ||

' to ' || grantee || ';' grant_sql

from dba_tab_privs

where table_name = 'RPT_TMP_10086BDL_20180820';

select 'grant ' || privilege || ' on ' || owner || '.' || table_name ||

' to ' || grantee || ';' grant_sql

from dba_tab_privs

where table_name = 'RPT_TMP_10086BDL';

6、插入表数据

insert into RPTUSER.RPT_TMP_10086BDL select * from RPTUSER.RPT_TMP_10086BDL_20180820

where HANDLEDATE >= to_date('2018-05-01 00:00:00','yyyy-mm-dd hh24:mi:ss')

and HANDLEDATE < to_date('2018-06-01 00:00:00','yyyy-mm-dd hh24:mi:ss');

commit;

7.--收集统计信息

set line 300 pages 2000 long 999999

select 'exec dbms_stats.gather_table_stats (ownname=>''' || table_owner ||

''', tabname=>''' || table_name || ''', partname=>''' ||

partition_name ||

''',method_opt=>''FOR ALL COLUMNS SIZE 1'',estimate_percent=>10,degree=>10,cascade=>true);'

from dba_tab_partitions

where table_owner = 'RPTUSER'

and table_name = 'RPT_TMP_10086BDL'

and last_analyzed is null

order by partition_name;

exec dbms_stats.gather_table_stats (ownname=>'RPTUSER', tabname=>'RPT_TMP_10086BDL', partname=>'P201805',method_opt=>'FOR ALL COLUMNS SIZE 1',estimate_percent=>10,degree=>10,cascade=>true);

exec dbms_stats.gather_table_stats (ownname=>'RPTUSER', tabname=>'RPT_TMP_10086BDL', partname=>'P201806',method_opt=>'FOR ALL COLUMNS SIZE 1',estimate_percent=>10,degree=>10,cascade=>true);

exec dbms_stats.gather_table_stats (ownname=>'RPTUSER', tabname=>'RPT_TMP_10086BDL', partname=>'P201807',method_opt=>'FOR ALL COLUMNS SIZE 1',estimate_percent=>10,degree=>10,cascade=>true);

exec dbms_stats.gather_table_stats (ownname=>'RPTUSER', tabname=>'RPT_TMP_10086BDL', partname=>'P201808',method_opt=>'FOR ALL COLUMNS SIZE 1',estimate_percent=>10,degree=>10,cascade=>true);

--查看收集到的统计信息

ora tstat RPT_TMP_10086BDL RPTUSER

8、备份

expdp \"/ as sysdba\" directory=DIR_DP tables=RPTUSER.RPT_TMP_10086BDL_20180820 dumpfile=RPTUSER.RPT_TMP_10086BDL_20180820_%U.dmp compression=all filesize=12g parallel=5 logfile=RPTUSER.RPT_TMP_10086BDL_20180820.log

9、MOVE剩余数据到其他表空间

alter table RPTUSER.RPT_TMP_10086BDL_20180820 move tablespace T_WMSUSERN parallel 4;

10 rebuild 索引

ora unusable

ALTER INDEX RPTUSER.RPT_TMP_10086BDL1 REBUILD ONLINE tablespace TS_WMS_DATA;

######################################回退方案###############################################

declare

begin

execute immediate 'alter table RPTUSER.RPT_TMP_10086BDL rename to RPTUSER.RPT_TMP_10086BDL_bak';

execute immediate 'alter table RPTUSER.RPT_TMP_10086BDL_20180820 rename to RPTUSER.RPT_TMP_10086BDL';

end ;

/