sqoop操作之HIVE导出到ORACLE

示例数据准备

hive中创建dept表

create table dept(

deptno int,

dname string,

loc string

)

row format delimited fields terminated by '\t' lines terminated by '\n' 

stored as textfile;

 

导入数据:

sqoop import --connect jdbc:oracle:thin:@192.168.1.107:1521:ORCL \

--username SCOTT --password tiger \

--table DEPT  \

--hive-overwrite --hive-import  --hive-table dept \

--fields-terminated-by '\t' --lines-terminated-by '\n' \

-m 3;

 

 

HIVE导出到ORACLE

需要分两步:
第一步:先写入到hdfs

insert overwrite directory '/user/hadoop/DEPT_HIVE_EXPORT' select * from dept;

第二步:由hdfs导出到oracle

导出到数据库时,要确保表已经在数据库中存在,否则报错。

create table DEPT_DEMO as select * from DEPT where 1=2;
sqoop export
--connect jdbc:oracle:thin:@192.168.1.107:1521:ORCL \ --username SCOTT --password tiger \ --table DEPT_DEMO \ --export-dir /user/hadoop/DEPT_HIVE_EXPORT \ --fields-terminated-by '\001' \ -m 2;

注:从hive导出到hdfs的分隔符不是,而是\001;如果不指定分隔符,则报错:Caused by: java.lang.NumberFormatException

 

 

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