oracl数据导入导出文档

删除表空间：
情况一:
1、表空间没数据时
drop tablespace 表空间 including contents and datafiles;

情况二:
2、表空间有数据并且有blob字段时

先查出带有blob字段的表名
SELECT * FROM DBA_TAB_COLUMNS WHERE DATA_TYPE LIKE '%LOB%' AND OWNER = '用户登录数据库名'

批量删除带有blob字段表的删除脚本
select 'drop table '||TABLE_NAME||';' FROM USER_TABLES WHERE TABLE_NAME LIKE 'T_%';
执行select 'drop table '||TABLE_NAME||';' FROM USER_TABLES WHERE TABLE_NAME LIKE 'T_%'查询结果
例如：
drop table T_DATAQUALITY;
drop table TEST1;
drop table TEST2;
drop table TEST3;
drop table TB_REG_TAXPAYERSTAT_MV;
drop table TB_QUERY_TAXINFO_MV;
drop table T_ADDTAX;
drop table T_BALANALYSERES;
drop table T_BALVALIDATE;
drop table T_BUSINESSQRY;
drop table T_CASERISK;
drop table T_WAGELIST;
drop table T_WAGEITEMLIST;
drop table T_WAGEDEDUCTADJ;
drop table T_WAGE;
drop table T_VCHRES;
drop table T_READ;
drop table T_ITEMTHIRD_STR;
drop table T_ITEMTHIRD_NUM;
drop table T_ITEMTAX_STR;
drop table T_ITEMTAX_NUM;
drop table T_ITEMENT_STR;
drop table T_ITEMENT_NUM;
drop table T_FREQUENCYRES;
drop table T_COLLECT;
drop table T_BUSINESSQUERYLIST;
drop table T_BALCHECK;
drop table T_BALAGE;

最后删除表空间
drop tablespace 表空间 including contents and datafiles;

情况三:
3、多张表空间内有关联的表
select x.table_name,x.partition_name,x.tablespace_name table1,y.tablespace_name table2 from dba_tab_partitions x,dba_tab_partitions y where x.tablespace_name = 'A表空间名' and y.tablespace_name <> 'B表空间名' AND x.table_name=y.table_name

删除
select x.table_name,x.partition_name,x.tablespace_name table1,y.tablespace_name table2 from dba_tab_partitions x,dba_tab_partitions y where x.tablespace_name = 'A表空间名' and y.tablespace_name <> 'B表空间名' AND x.table_name=y.table_name
查询结果

最后删除表空间
drop tablespace 表空间 including contents and datafiles;

--创建表空间

先创建E:\oradata\hngmp文件夹
然后创建表空间
create tablespace 表空间名
datafile 'E:\oradata\hngmp\表空间名.ora'
size 1G
autoextend on next 1G;

--删除用户
drop user 用户登录数据库名 cascade;

--创建用户
create user 用户登录数据库密码 identified by 用户登录数据库名
default tablespace 主表空间名
temporary tablespace TEMP;

导入数据
impdp hngmp/[email protected]:1521/orcl directory=dpdir dum
pfile=hngmp_20190610.dp logfile=hngmp_sx schemas=hngmp transform=segment_attribu
tes:n exclude=statistics

导出数据
expdp hngmp/[email protected]:1521/ORCL directory=dpdir dumpfile=hngmp_20190610.dp logfile=hngmp_20190610.log schemas=hngmp  compression=all

其他导入数据语句
impdp gmp/[email protected]:1521/dqyss directory=DMPDIR dumpfile=2017051101.dp logfile=20170511.log FULL = Y

impdp hngmp/[email protected]:1521/orcl directory=dpdir dumpfile=20190424.dmp logfile=hngmp_20190514_02.log table_exists_action=replace remap_schema=gmpsxds:hngmp schemas=hngmp

impdp hngmp/[email protected]:1521/orcl directory=dpdir dumpfile=20190424.dmp logfile=hngmp_20190513.log table_exists_action=replace remap_schema=gmp:hngmp schemas=hngmp

impdp sjgl/[email protected]:1521/orcl directory=dpdir dumpfile=sjgl_20190515.dmp logfile=sjgl_20190515.log table_exists_action=replace remap_schema=gmp:hngmp schemas=hngmp