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sqluldr2 是一个 基于 OCI 的 文本导出工具,小巧方便,使用方法类似于 Oracle 自带的 exp,支持自定义 SQL、本地和客户端的导出,速度快,效率高。
下载地址,最下面有个小工具里面就有
- http://www.onexsoft.com/download.html
也可以直接在系统上 wget
- wget http://www.onexsoft.com/software/sqluldr2linux64.zip
解压之后就是一个 bin 文件
- -rwxrwxrwx 1 oracle oinstall 185894 1 月 27 2016 sqluldr2linux64.bin
直接执行就能显示帮助
- [oracle@hecomoracleserver2 sqluldr2]$ ./sqluldr2linux64.bin
- SQL*UnLoader: Fast Oracle Text Unloader (GZIP, Parallel), Release 4.0.1
- (@) Copyright Lou Fangxin (AnySQL.net) 2004 – 2010, all rights reserved.
- License: Free for non-commercial useage, else 100 USD per server.
- Usage: SQLULDR2 keyword=value [,keyword=value,...]
- Valid Keywords:
- user = username/password@tnsname
- sql = SQL file name
- query = select statement
- field = separator string between fields
- record = separator string between records
- rows = print progress for every given rows (default, 1000000)
- file = output file name(default: uldrdata.txt)
- log = log file name, prefix with + to append mode
- fast = auto tuning the session level parameters(YES)
- text = output type (MYSQL, CSV, MYSQLINS, ORACLEINS, FORM, SEARCH).
- charset = character set name of the target database.
- ncharset= national character set name of the target database.
- parfile = read command option from parameter file
- for field and record, you can use ‘0x’ to specify hex character code,
- \r=0x0d \n=0x0a |=0x7c ,=0x2c, \t=0x09, :=0x3a, #=0x23, “=0x22
上面的参数中,比较常用的是:
query:用这个参数可以自定义导出语句
file:导出的文件名字和目录
log:日志
parfile:可以把参数放到 parfile 文件里,这个参数对于复杂 sql 很有用。
field: 设置导出文件里的分隔符
连接数据的方法:
本地连接方式:
- ./sqluldr2linux64.bin user=gltest/gltest query=“select * from T_H_BK_CUSTOMER_20180114_0;“ file=/home/oracle/sqluldr2/T_H_BK_CUSTOMER_20180114_0.csv
客户端连接:TNS 方式
- ./sqluldr2linux64.bin user=gltest/gltest@orcl query=“select * from T_H_BK_CUSTOMER_20180114_0;“ file=/home/oracle/sqluldr2/T_H_BK_CUSTOMER_20180114_0.csv
客户端连接:直接连接方式
- ./sqluldr2linux64.bin user=gltest/gltest@192.168.128.98:1521/orcl query=“select * from T_H_BK_CUSTOMER_20180114_0;“ file=/home/oracle/sqluldr2/T_H_BK_CUSTOMER_20180114_0.csv
测试导出速度:
因为我的 sql 比较长,所以用了 parfile:
- [oracle@gloracleserver2 sqluldr2]$ more customer.txt
- user=gltest/gltest
- query=select ent_code,code,name,cust_levels,dept_code,poi_id,status,createon,createby,lastupdateon from v30_md_customer;
看看导出输出,1100 万数据不到 30 秒,速度很快。
- [oracle@gloracleserver2 sqluldr2]$ ./sqluldr2linux64.bin parfile=/home/oracle/sqluldr2/customer.txt file=/home/oracle/sqluldr2/customer.csv
- 0 rows exported at 2018-01-16 20:25:09, size 0 MB.
- 1000000 rows exported at 2018-01-16 20:25:11, size 96 MB.
- 2000000 rows exported at 2018-01-16 20:25:14, size 196 MB.
- 3000000 rows exported at 2018-01-16 20:25:16, size 296 MB.
- 4000000 rows exported at 2018-01-16 20:25:18, size 392 MB.
- 5000000 rows exported at 2018-01-16 20:25:21, size 492 MB.
- 6000000 rows exported at 2018-01-16 20:25:23, size 592 MB.
- 7000000 rows exported at 2018-01-16 20:25:26, size 692 MB.
- 8000000 rows exported at 2018-01-16 20:25:28, size 788 MB.
- 9000000 rows exported at 2018-01-16 20:25:31, size 888 MB.
- 10000000 rows exported at 2018-01-16 20:25:34, size 988 MB.
- 11000000 rows exported at 2018-01-16 20:25:36, size 1088 MB.
- 11317061 rows exported at 2018-01-16 20:25:37, size 1121 MB.
- output file /home/oracle/sqluldr2/customer.csv closed at 11317061 rows, size 1121 MB.
遇到的错误:
1. 导出文件里有中文显示乱码,需要设置参数 charset=UTF8
2. ORA-24345: A Truncation or null fetch error occurred,设置参数 safe=yes
更多 Oracle 相关信息见Oracle 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=12
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