基于python連接oracle導(dǎo)并出數(shù)據(jù)文件

更新時間：2020年04月28日 09:45:15 作者：道法自然﹑

這篇文章主要介紹了基于python連接oracle導(dǎo)并出數(shù)據(jù)文件,文中通過示例代碼介紹的非常詳細，對大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價值,需要的朋友可以參考下

python連接oracle，感覺table_list文件內(nèi)的表名，來卸載數(shù)據(jù)文件

主腳本：

import os
import logging
import sys
import configparser
import subprocess
import cx_Oracle

#判斷輸入?yún)?shù)個數(shù)
class param():
  def check_para(self):
    if len(sys.argv) != 1:
       print("請輸入正確的參數(shù)：yyyymmdd")
       exit(1)
    else:
      print("繼續(xù)執(zhí)行")

#根據(jù)配置文件獲取登錄信息
class get_dbini():
  def get_db(self):
    config=configparser.ConfigParser()
    filepath="db.ini"
    if os.path.exists(filepath):
      config.read_file(open(filepath))
      dbinfo=[config.get("db_oracle","username"),\
          config.get("db_oracle","password"),\
          config.get("db_oracle","ip"),\
          config.get("db_oracle","dbsid")]
    else:
      loginfo.info("沒有那個配置文件")
      sys.exit(4)
    #聲明使用全局變量
    global username,password,ip,dbsid
    username=dbinfo[0]
    password=dbinfo[1]
    ip=dbinfo[2]
    dbsid=dbinfo[3]
    loginfo.info(username+password+ip+dbsid)
          
#導(dǎo)出表數(shù)據(jù)
class exp_date():
  def exp_table(self):
   with open('table_list','r') as f:
    list = f.readlines()
   for i in list:
    tablename = i.rstrip('\n')
    exportquery='sqluldr2 user='+username+'/'+password+'@'+ip+':1521/'+dbsid+' query="select * from '+tablename+';" head=no file='+tablename+'.dat field=0x03 record=0x030x0a safe=yes'
    loginfo.info("開始導(dǎo)出數(shù)據(jù): exportquery= "+exportquery)
    flag= subprocess.check_call(exportquery,shell=True)
    loginfo.info(flag)
    
#打印日志
class log_set():
  def logger_set(self):
   logger=logging.getLogger('mylogger')
   logger.setLevel(logging.DEBUG)
   
   fh=logging.FileHandler('a.log','w')
   fh.setLevel(logging.INFO)
   
   ch=logging.StreamHandler()
   ch.setLevel(logging.ERROR)

   formatter = logging.Formatter('%(asctime)s -%(name)s -%(levelname)s - %(message)s')
   
   fh.setFormatter(formatter)
   ch.setFormatter(formatter)
   
   logger.addHandler(fh)
   logger.addHandler(ch)
   return logger
if __name__=='__main__':
  loginfo=log_set().logger_set()
  param().check_para()
  get_dbini().get_db()
  exp_date().exp_table()

DB配置文件內(nèi)容：

db.ini

[db_oracle]
username=c##scott
password=tiger
ip=192.168.1.250
dbsid=orcl

表名字的配置文件：

table_list

BONUS
DEPT
EMP
LEAD_TABLE
SALGRADE
T1
TB_USER
TEST
XGJ
XGJ_2

運行結(jié)果：

[oracle@master2 tmp]$ python3 c.py
繼續(xù)執(zhí)行
0 rows exported at 2019-01-22 17:51:51, size 0 MB.
output file BONUS.dat closed at 0 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
4 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file DEPT.dat closed at 4 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
12 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file EMP.dat closed at 12 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
10 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file LEAD_TABLE.dat closed at 10 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
5 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file SALGRADE.dat closed at 5 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
5 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file T1.dat closed at 5 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
10 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file TB_USER.dat closed at 10 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
8 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file TEST.dat closed at 8 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
9 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file XGJ.dat closed at 9 rows, size 0 MB.
0 rows exported at 2019-01-22 17:51:52, size 0 MB.
8 rows exported at 2019-01-22 17:51:52, size 0 MB.
output file XGJ_2.dat closed at 8 rows, size 0 MB.

查看日志：

[oracle@master2 tmp]$ more a.log
2019-01-22 17:51:51,858 -mylogger -INFO - c##scotttiger192.168.1.250orcl
2019-01-22 17:51:51,858 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from BONUS;" head=no file=BON
US.dat field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:51,949 -mylogger -INFO - 0
2019-01-22 17:51:51,949 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from DEPT;" head=no file=DEPT
.dat field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,038 -mylogger -INFO - 0
2019-01-22 17:51:52,038 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from EMP;" head=no file=EMP.d
at field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,129 -mylogger -INFO - 0
2019-01-22 17:51:52,129 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from LEAD_TABLE;" head=no fil
e=LEAD_TABLE.dat field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,299 -mylogger -INFO - 0
2019-01-22 17:51:52,300 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from SALGRADE;" head=no file=
SALGRADE.dat field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,401 -mylogger -INFO - 0
2019-01-22 17:51:52,402 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from T1;" head=no file=T1.dat
field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,490 -mylogger -INFO - 0
2019-01-22 17:51:52,490 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from TB_USER;" head=no file=T
B_USER.dat field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,578 -mylogger -INFO - 0
2019-01-22 17:51:52,578 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from TEST;" head=no file=TEST
.dat field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,665 -mylogger -INFO - 0
2019-01-22 17:51:52,665 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from XGJ;" head=no file=XGJ.d
at field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,771 -mylogger -INFO - 0
2019-01-22 17:51:52,771 -mylogger -INFO - 開始導(dǎo)出數(shù)據(jù): exportquery= sqluldr2 user=c##scott/tiger@192.168.1.250:1521/orcl query="select * from XGJ_2;" head=no file=XGJ
_2.dat field=0x03 record=0x030x0a safe=yes
2019-01-22 17:51:52,856 -mylogger -INFO - 0