Oracle数据泵导入导出数据的实现_Oracle

一、导出/导入指定用户下的表带条件的数据

1.先通过oracle视图生成可执行的sql

select 'iss_a.' || table_name || ':"where data_date in (''20250630'',''20250731'')",'
from all_tables where owner='iss_a' and table_name like 'iss_a%';

2.新建一个par文件

注意：脚本里面如果不写tables，写schemas=iss_a，就会导出iss_a用户下所有表过滤后的数据

vim exp-20250630.par

userid=iss_a/123456@127.0.0.1:1521/testdb
dumpfile=iss_a_data_20250630.dmp
logfile=iss_a_data_20250630.log
tables=(
iss_a.iss_a_acct_info,
iss_a.iss_a_acct_info_bak,
iss_a.iss_a_bd_bs_sm_duty_info,
iss_a.iss_a_bd_bs_sm_duty_info_bak,
iss_a.iss_a_bd_bs_sm_punish_info,
iss_a.iss_a_bd_bs_sm_punish_info_bak
)
content=data_only
query=(
iss_a_acct_info:"where data_date in ('20250630','20250731')",
iss_a_acct_info_bak:"where data_date in ('20250630','20250731')",
iss_a_bd_bs_sm_duty_info:"where data_date in ('20250630','20250731')",
iss_a_bd_bs_sm_duty_info_bak:"where data_date in ('20250630','20250731')",
iss_a_bd_bs_sm_punish_info:"where data_date in ('20250630','20250731')",
iss_a_bd_bs_sm_punish_info_bak:"where data_date in ('20250630','20250731')"
)

3.使用数据泵执行该par文件

[oracle@t-zt-db ~]$ expdp parfile=exp-20250630.par

4.查询导出的行数与数据库中的行数是否一致

select * from iss_a.iss_a_acct_info where data_date in ('20250630','20250731');

是33行，说明无误

5.使用数据泵导入dmp文件

清空原表指定日期的数据

delete from iss_a.iss_a_acct_info where data_date in ('20250630','20250731');
delete from iss_a.iss_a_acct_info_bak where data_date in ('20250630','20250731');
delete from iss_a.iss_a_bd_bs_sm_duty_info where data_date in ('20250630','20250731');
delete from iss_a.iss_a_bd_bs_sm_duty_info_bak where data_date in ('20250630','20250731');
delete from iss_a.iss_a_bd_bs_sm_punish_info where data_date in ('20250630','20250731');
delete from iss_a.iss_a_bd_bs_sm_punish_info_bak where data_date in ('20250630','20250731');

注意：必须加上content=data_only，否则表结构和数据都会导入执行

impdp iss_a/123456@127.0.0.1:1521/testdb dumpfile=iss_a_data_20250630.dmp logfile=imp_iss_a_data_20250630.log content=data_only

6.导入后查看数据量是否一致

select 'select * from iss_a.' || table_name || ' where data_date in (''20250630'',''20250731'');,'
from all_tables where owner='iss_a' and table_name like 'iss_a%';

select * from iss_a.iss_a_acct_info where data_date in ('20250630','20250731');
select * from iss_a.iss_a_acct_info_bak where data_date in ('20250630','20250731');
select * from iss_a.iss_a_bd_bs_sm_duty_info where data_date in ('20250630','20250731');
select * from iss_a.iss_a_bd_bs_sm_duty_info_bak where data_date in ('20250630','20250731');
select * from iss_a.iss_a_bd_bs_sm_punish_info where data_date in ('20250630','20250731');
select * from iss_a.iss_a_bd_bs_sm_punish_info_bak where data_date in ('20250630','20250731');

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