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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