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 '	' lines terminated by '
' 
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 '	' --lines-terminated-by '
' 
-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 ' 01' -m 2;

注:从hive导出到hdfs的分隔符不是,而是 01;如果不指定分隔符,则报错:Caused by: java.lang.NumberFormatException