笔记：Python进行数据库文件导出备份
示范环境：
centos 6.4系统，oracle数据库服务器：192.168.1.112；用户/口令：ora/oracle
ftp文件备份服务器：192.168.1.113；用户/口令：databak/databak
#!/usr/bin/python
#coding=utf-8
import os
import time, sys
import traceback
import ftplib
reload(sys)
sys.setdefaultencoding('utf-8')
IFS="/" #路径分割符，linux用"/" win32用"\\"
#设置数据库字符集
#os.putenv('NLS_LANG','AMERICAN_AMERICA.AL32UTF8')
nowdate=time.strftime("%Y%m%d%H%M") #当前日期
homedir = os.getcwd() #当前路径
workdir="/home/oracle/databak" #本地备份文件夹
errlogfile="/home/oracle/databak/PROGerror"+nowdate+".log" #错误日志名
user="orcl" #数据库用户名
password="orcl" #数据库密码
sid = "@192.168.1.112" #数据库sid
dblog="/home/oracle/databak/EXP"+nowdate+".log " #DB备份过程中的exp日志
dbconst="FULL=Y" #DB的其他参数字串
dbnamelist=["orcl"] #需要备份那些数据库
expCommand= "/opt/oracle/102/bin/exp " #oracle的exp导出文件所在目录
bufsize = 1024 #FTP的缓存，不要改
ftp_addr="192.168.1.113" #ftp地址
ftp_port="21" #ftp端口
ftp_user="databak" #ftp用户名
ftp_pwd="databak" #ftp密码
ftp_path="/112oracle" #远端ftp路径
def dumpdb(dbname):
filename=dbname+"_"+nowdate #备份文件名
#sqlvalformat ="%s userid=%s pwd=%s file=%s log=%s %s"
dumpfile=os.path.join(workdir,filename+".dmp") #DUMP文件名
#sqlval=sqlvalformat % (expCommand,user,password,dumpfile,dblog,dbconst)
#sqlval="expCommand"+user+"/"+password,dumpfile,dblog,dbconst)
sqlval=expCommand+user+"/"+password +"@ora112 file="+dumpfile+ " log=" + dblog
result=os.system(sqlval)
print sqlval
def getfilename(path):
pt=path.rfind(IFS)
return path[pt+1:]
#def rarfile(destfile,sourcefile):
# rarprogram=os.path.join(homedir,"RAR.exe") #rar for dos放在本地目录
# rarvalformat = "%s a \"%s\" \"%s\" -r" #rar 的语法格式
# rarfilename=os.path.join(workdir,destfile+"_"+nowdate+".rar") #压缩文件名
# sourcefilename=os.path.join(workdir,sourcefile+"_"+nowdate+".dmp") #备份源文件
# rarval= rarvalformat % (rarprogram,rarfilename,sourcefilename)
# result=os.system(rarval)
#print rarval
def ftpstor(ftpfile):
ftp=ftplib.FTP()
try:
ftp.connect(ftp_addr,ftp_port)
ftp.set_pasv(True)
ftp.login(ftp_user,ftp_pwd)
print ftp.getwelcome()
ftp.cwd(ftp_path)
f = open(ftpfile,'rb')
print getfilename(ftpfile)," uploading..."
ftp.storbinary("STOR %s "% getfilename(f.name) ,f,bufsize) #上传文件
print getfilename(ftpfile)," upload completed."
ftp.close()
f.close() #关闭文件
ftp.quit()
except:
info=sys.exc_info()
path=os.path.join(workdir,errlogfile)
traceback.print_exc(file=open(path,"a"))
def main():
for dbname in dbnamelist:
print time.strftime('%Y-%m-%d:%H:%M:%S')
print "-----------------------------------------------"
print dbname[:], "DB is backup now..."
dumpdb(dbname)
print dbname[:], "DB backup completed."
#print "-----------------------------------------------"
#print "dmpfile compress now..."
#rarfile(dbname,dbname)
#print "dmpfile compress completed."
print "-----------------------------------------------"
ftpfilename=os.path.join(workdir,dbname+"_"+nowdate+".dmp")
print ftpfilename," FTP session starting..."
ftpstor(ftpfilename)
print ftpfilename," FTP session completed."
print "-----------------------------------------------"
#dumpfile=os.path.join(workdir,dbname+"_"+nowdate+".dmp")
#os.remove(dumpfile)
#print dumpfile," remove completed."
#print "-----------------------------------------------"
main()