hadoop数据导入oracle
时间: 2023-11-25 14:48:50 浏览: 104
Hadoop可以使用Sqoop工具将数据从Oracle数据库导入到HDFS中,也可以将数据从HDFS导出到Oracle数据库中。Sqoop是一个用于在Hadoop和关系型数据库之间传输数据的工具,它支持各种关系型数据库,包括Oracle。Sqoop v2仅支持保存到HDFS,在所有与JDBC兼容的数据库中,可以使用以下命令将数据从Oracle数据库导入到HDFS中:
```
sqoop import \
--connect jdbc:oracle:thin:@192.168.1.14:1521:oradb1 \
--username <username> \
--password <password> \
--table <table_name> \
--target-dir <target_directory> \
--fields-terminated-by ',' \
--lines-terminated-by '\n'
```
其中,`<username>`和`<password>`是Oracle数据库的用户名和密码,`<table_name>`是要导入的表名,`<target_directory>`是要将数据导入到HDFS中的目标目录。此外,`--fields-terminated-by`和`--lines-terminated-by`参数用于指定字段和行的分隔符。
如果要将数据从HDFS导出到Oracle数据库中,可以使用以下命令:
```
sqoop export \
--connect jdbc:oracle:thin:@192.168.1.14:1521:oradb1 \
--username <username> \
--password <password> \
--table <table_name> \
--export-dir <export_directory> \
--input-fields-terminated-by ',' \
--input-lines-terminated-by '\n'
```
其中,`<export_directory>`是要导出的HDFS目录,`--input-fields-terminated-by`和`--input-lines-terminated-by`参数用于指定字段和行的分隔符。
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