MySQL数据导入oracle

步骤：
1、从mysql导出数据文件

select sender,imsi,random_code,date_format(token_create_time,'%Y%m%d%H%i%s'),date_format(last_login_time,'%Y%m%d%H%i%s'),1 as status
from tb_sms_token where last_login_time is not null
into outfile '/home/mysql/TB_GH_WLAN_TOKEN.dat'
FIELDS
TERMINATED BY '$'
ESCAPED BY '\\'
LINES
TERMINATED BY '\r\n'

select sender,imsi,random_code,date_format(token_create_time,'%Y%m%d%H%i%s'),date_format(last_login_time,'%Y%m%d%H%i%s'),1 as status
from tb_sms_token where last_login_time is not null
into outfile '/home/mysql/TB_GH_WLAN_TOKEN.dat'
FIELDS
TERMINATED BY '$'
ESCAPED BY '\\'
LINES
TERMINATED BY '\r\n'

各条数据用换行分割，字段之前用$分割
2、如有oracle无法处理字段可以用linux的awk或sed工具进行转换
3、使用oracle的sqlldr命令导入数据文件，控制文件内容如下

LOAD DATA
INFILE "/home/oracle/TB_GH_WLAN_TOKEN.dat"
APPEND
INTO TABLE GAME_HALL_TOKEN_TEMP
FIELDS TERMINATED BY '$'
(id sequence(max,1),
PHONE_NUMBER ,IMSI,TOKEN_VALUE,
CREATE_TIME date "yyyyMMddhh24miss",
LAST_USE_TIME date "yyyyMMddhh24miss",
STATUS integer)

LOAD DATA
INFILE "/home/oracle/TB_GH_WLAN_TOKEN.dat"
APPEND
INTO TABLE GAME_HALL_TOKEN_TEMP
FIELDS TERMINATED BY '$'
(id sequence(max,1),
PHONE_NUMBER ,IMSI,TOKEN_VALUE,
CREATE_TIME date "yyyyMMddhh24miss",
LAST_USE_TIME date "yyyyMMddhh24miss",
STATUS integer)

具体sqlldr使用可以参考oracle帮助

需要注意的问题有：
1、主键的生成
2、日期格式处理
3、空值的处理
4、大数据量导入可以目标库中先不建索引，导入后再加上索引，应该可以加快导入速度