Oracle用分区表分区交换做历史数据迁移
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一。
说明：
关于分区表很多其它内容： http://blog.csdn.net/tanqingru/article/category/1397435
关于表空间传很多其它内容： http://blog.csdn.net/tanqingru/article/category/1138527
二。
实例：
整个过程是在OLTP库做分区交换。然后通过表空间传输迁移至OLAP库。最后再做一次分区交换就可以。
1.创造须要的环境。
OLTP库环境准备：
SQL> conn /as sysdba
Connected.
SQL> select * from V$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
SQL> show parameter db_create_file_dest
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_create_file_dest string /data01/qing
create tablespace tan_2013_9 datafile size 5m autoextend on;
create tablespace tan_2013_10 datafile size 5m autoextend on;
create tablespace tan_2013_11 datafile size 5m autoextend on;
create tablespace tan_2013_12 datafile size 5m autoextend on;
create tablespace tan_2014_1 datafile size 5m autoextend on;
create tablespace tan_2014_2 datafile size 5m autoextend on;
create tablespace tan_2014_3 datafile size 5m autoextend on;
create tablespace tan_2014_4 datafile size 5m autoextend on;
create tablespace tan_2014_5 datafile size 5m autoextend on;
create tablespace tan_2014_6 datafile size 5m autoextend on;
create tablespace tan_2014_7 datafile size 5m autoextend on;
create tablespace tan_2014_8 datafile size 5m autoextend on;
conn tan/tan
SQL> create table tan
(t_id number(10),
t_name varchar2(100),
t_date date )
partition by range(t_date)
(partition tan_2013_9 values less than(to_date('2013-10-01','yyyy-mm-dd')) tablespace tan_2013_9,
partition tan_2013_10 values less than(to_date('2013-11-01','yyyy-mm-dd')) tablespace tan_2013_10,
partition tan_2013_11 values less than(to_date('2013-12-01','yyyy-mm-dd')) tablespace tan_2013_11,
partition tan_2013_12 values less than(to_date('2014-01-01','yyyy-mm-dd')) tablespace tan_2013_12,
partition tan_2014_1 values less than(to_date('2014-02-01','yyyy-mm-dd')) tablespace tan_2014_1,
partition tan_2014_2 values less than(to_date('2014-03-01','yyyy-mm-dd')) tablespace tan_2014_2,
partition tan_2014_3 values less than(to_date('2014-04-01','yyyy-mm-dd')) tablespace tan_2014_3,
partition tan_2014_4 values less than(to_date('2014-05-01','yyyy-mm-dd')) tablespace tan_2014_4,
partition tan_2014_5 values less than(to_date('2014-06-01','yyyy-mm-dd')) tablespace tan_2014_5,
partition tan_2014_6 values less than(to_date('2014-07-01','yyyy-mm-dd')) tablespace tan_2014_6,
partition tan_2014_7 values less than(to_date('2014-08-01','yyyy-mm-dd')) tablespace tan_2014_7,
partition tan_2014_8 values less than(to_date('2014-09-01','yyyy-mm-dd')) tablespace tan_2014_8
);
create index ind_tan on tan(t_date) local
(
partition ind_tan_2013_9 tablespace tan_2013_9,
partition ind_tan_2013_10 tablespace tan_2013_10,
partition ind_tan_2013_11 tablespace tan_2013_11,
partition ind_tan_2013_12 tablespace tan_2013_12,
partition ind_tan_2014_1 tablespace tan_2014_1,
partition ind_tan_2014_2 tablespace tan_2014_2,
partition ind_tan_2014_3 tablespace tan_2014_3,
partition ind_tan_2014_4 tablespace tan_2014_4,
partition ind_tan_2014_5 tablespace tan_2014_5,
partition ind_tan_2014_6 tablespace tan_2014_6,
partition ind_tan_2014_7 tablespace tan_2014_7,
partition ind_tan_2014_8 tablespace tan_2014_8
);
begin
for i in 1.. 10000 loop
if( mod(i,12)+1 <=8) then
insert into tan values(i,'tan'||i,to_date('2014-'||(mod(i,12)+1)||'-01','yyyy-mm-dd'));
else
insert into tan values(i,'tan'||i,to_date('2013-'||(mod(i,12)+1)||'-01','yyyy-mm-dd'));
end if;
end loop;
commit;
end;
/
SQL> select count(*) from tan partition(tan_2013_12) ;
COUNT(*)
----------
833
SQL> select count(*) from tan partition(tan_2013_9) ;
COUNT(*)
----------
833
SQL> select count(*) from tan partition(tan_2014_8) ;
COUNT(*)
----------
833
SQL> select count(*) from tan partition(tan_2014_1) ;
COUNT(*)
----------
833
SQL> select partition_name,tablespace_name from dba_segments
where segment_name in ('TAN','IND_TAN');
PARTITION_NAME TABLESPACE_NAME
------------------------------ ------------------------------
TAN_2014_8 TAN_2014_8
TAN_2014_7 TAN_2014_7
TAN_2014_6 TAN_2014_6
TAN_2014_5 TAN_2014_5
TAN_2014_4 TAN_2014_4
TAN_2014_3 TAN_2014_3
TAN_2014_2 TAN_2014_2
TAN_2014_1 TAN_2014_1
TAN_2013_9 TAN_2013_9
TAN_2013_12 TAN_2013_12
TAN_2013_11 TAN_2013_11
TAN_2013_10 TAN_2013_10
IND_TAN_2014_8 TAN_2014_8
IND_TAN_2014_7 TAN_2014_7
IND_TAN_2014_6 TAN_2014_6
IND_TAN_2014_5 TAN_2014_5
IND_TAN_2014_4 TAN_2014_4
IND_TAN_2014_3 TAN_2014_3
IND_TAN_2014_2 TAN_2014_2
IND_TAN_2014_1 TAN_2014_1
IND_TAN_2013_9 TAN_2013_9
IND_TAN_2013_12 TAN_2013_12
IND_TAN_2013_11 TAN_2013_11
IND_TAN_2013_10 TAN_2013_10
24 rows selected. OLAP库环境准备
<span style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;">create tablespace tan_2013_7 datafile size 5m autoextend on;</span>
create tablespace tan_2013_8 datafile size 5m autoextend on;
create table tan
(t_id number(10),
t_name varchar2(100),
t_date date )
partition by range(t_date)
(partition tan_2013_7 values less than(to_date('2013-08-01','yyyy-mm-dd')) tablespace tan_2013_7,
partition tan_2013_8 values less than(to_date('2013-09-01','yyyy-mm-dd')) tablespace tan_2013_8
);
create index ind_tan on tan(t_date) local
(
partition ind_tan_2013_7 tablespace tan_2013_7,
partition ind_tan_2013_8 tablespace tan_2013_8
);
begin
for i in 1.. 10000 loop
insert into tan values(i,'tan'||i,to_date('2013-'||(mod(i,2)+7)||'-01','yyyy-mm-dd'));
end loop;
commit;
end;
/
SQL> select count(*) from tan partition(tan_2013_8);
COUNT(*)
----------
5000
SQL> select count(*) from tan partition(tan_2013_7);
COUNT(*)
----------
5000
2.分区交换
如今要做的事是迁移2013年9月份数据。
创建个暂时表：
SQL> create table tmp_tan_2013_9 as select * from tan where 1=2;
SQL> create index ind_tmp_tan_2013_9 on tmp_tan_2013_9(t_date);
分区交换。
SQL> alter table tan exchange partition tan_2013_9
with table tmp_tan_2013_9 including indexes with validation;
验证：
SQL> select count(*) from tan partition(tan_2013_9) ;
COUNT(*)
----------
0
SQL> select count(*) from tmp_tan_2013_9;
COUNT(*)
----------
833
SQL> select partition_name,tablespace_name from dba_segments
where segment_name in ('TAN','IND_TAN');
PARTITION_NAME TABLESPACE_NAME
------------------------------ ------------------------------
TAN_2014_8 TAN_2014_8
TAN_2014_7 TAN_2014_7
TAN_2014_6 TAN_2014_6
TAN_2014_5 TAN_2014_5
TAN_2014_4 TAN_2014_4
TAN_2014_3 TAN_2014_3
TAN_2014_2 TAN_2014_2
TAN_2014_1 TAN_2014_1
TAN_2013_12 TAN_2013_12
TAN_2013_11 TAN_2013_11
TAN_2013_10 TAN_2013_10
IND_TAN_2014_8 TAN_2014_8
IND_TAN_2014_7 TAN_2014_7
IND_TAN_2014_6 TAN_2014_6
IND_TAN_2014_5 TAN_2014_5
IND_TAN_2014_4 TAN_2014_4
IND_TAN_2014_3 TAN_2014_3
IND_TAN_2014_2 TAN_2014_2
IND_TAN_2014_1 TAN_2014_1
IND_TAN_2013_12 TAN_2013_12
IND_TAN_2013_11 TAN_2013_11
IND_TAN_2013_10 TAN_2013_10
22 rows selected.
3. 表空间传输：
很多其它关于表空间传输的内容：http://blog.csdn.net/bamuta/article/category/1138527验证表空间的自包括：
SQL> exec dbms_tts.transport_set_check(‘TAN_2013_9‘,TRUE);
PL/SQL procedure successfully completed.
SQL> select * from transport_set_violations;
no rows selected
另外表空间传输须要两端库的字符集一致。
导出无数据：
SQL> alter tablespace tan_2013_9 read only;
复制文件
[[email protected] ~]$ scp exp_tan_2013_9.dmp 192.168.114.174:/home/oracle/
[[email protected] ~]$ scp /data01/qing/QING/datafile/o1_mf_tan_2013_9tht2cgh_.dbf 192.168.114.174:/data01/vm603/VM603/datafile/
在目标库导入元数据
[[email protected] ~]$ imp \‘sys/oracle as sysdba\‘ transport_tablespace=y file=exp_tan_2013_9.dmp log=imp.log tablespaces=tan_2013_9 datafiles=‘/data01/vm603/VM603/datafile/o1_mf_tan_2013_9tht2cgh_.dbf‘
将两端库的该表空间read write
SQL> alter tablespace tan_2013_9 read write;
4.目标库再做分区交换
目标库对就表添加分区：SQL> alter table tan add partition tan_2013_9 values less than (to_date(‘2013-10-01‘,‘yyyy-mm-dd‘)) tablespace tan_2013_9;
Table altered.
SQL> select count(*) from tan partition(tan_2013_9);
COUNT(*)
----------
0
在目标库做一次分区交换。
SQL> alter table tan exchange partition tan_2013_9 with table tmp_tan_2013_9 including indexes with validation;
Table altered.
检查
SQL> select count(*) from tan partition(tan_2013_9);
COUNT(*)
----------
833
SQL> select table_name,partition_name,tablespace_name from user_tab_partitions;
TABLE_NAME PARTITION_NAME TABLESPACE_NAME
------------------------------ ------------------------------ ------------------------------
TAN TAN_2013_8 TAN_2013_8
TAN TAN_2013_7 TAN_2013_7
TAN TAN_2013_9 TAN_2013_9
SQL> select index_name,partition_name,tablespace_name from user_ind_partitions;
INDEX_NAME PARTITION_NAME TABLESPACE_NAME
------------------------------ ------------------------------ ------------------------------
IND_TAN IND_TAN_2013_8 TAN_2013_8
IND_TAN IND_TAN_2013_7 TAN_2013_7
IND_TAN TAN_2013_9 TAN_2013_95.源库删掉已经迁移走的分区：
SQL> select table_name,partition_name,tablespace_name from user_tab_partitions; TABLE_NAME PARTITION_NAME TABLESPACE_NAME ------------------------------ ------------------------------ ------------------------------ TAN TAN_2014_3 TAN_2014_3 TAN TAN_2014_2 TAN_2014_2 TAN TAN_2014_4 TAN_2014_4 TAN TAN_2014_5 TAN_2014_5 TAN TAN_2014_6 TAN_2014_6 TAN TAN_2014_7 TAN_2014_7 TAN TAN_2014_8 TAN_2014_8 TAN TAN_2013_10 TAN_2013_10 TAN TAN_2013_11 TAN_2013_11 TAN TAN_2013_12 TAN_2013_12 TAN TAN_2014_1 TAN_2014_1 TAN TAN_2013_9 USERS 12 rows selected. SQL> <strong>alter table tan drop partition tan_2013_9;</strong> Table altered. SQL> select table_name,partition_name,tablespace_name from user_tab_partitions; TABLE_NAME PARTITION_NAME TABLESPACE_NAME ------------------------------ ------------------------------ ------------------------------ TAN TAN_2014_3 TAN_2014_3 TAN TAN_2014_2 TAN_2014_2 TAN TAN_2014_4 TAN_2014_4 TAN TAN_2014_5 TAN_2014_5 TAN TAN_2014_6 TAN_2014_6 TAN TAN_2014_7 TAN_2014_7 TAN TAN_2014_8 TAN_2014_8 TAN TAN_2013_10 TAN_2013_10 TAN TAN_2013_11 TAN_2013_11 TAN TAN_2013_12 TAN_2013_12 TAN TAN_2014_1 TAN_2014_1
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