利用python往oracle写数据

最近需要整理一些Oracle数据表，由于python用习惯了，直接就python转换，然后存入。在处理的过程中遇到了一些问题，好在最后都解决了，现将代码贴一下，作为自己的一个阶段性小总结把。主要处理步骤如下：

# coding=utf-8#设置语言环境import osos.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'#设置数据库链接import cx_Oracleconn_str = 'username/password@数据库服务器地址:1521/dzzwdb'connection_oracle = cx_Oracle.Connection(conn_str)cursor_oracle = connection_oracle.cursor()

sql = 'select distinct rule_condition from BIGDATATEAM.CASE_ASSOCIATION_RULES'cursor_oracle.execute(sql)data = cursor_oracle.fetchall()#使用dataframe进行处理import pandas as pddf = pd.DataFrame(list(data),columns=['mxmc'])#产生唯一编号import uuiduuid_list = [str(uuid.uuid1()) for i in range(df.shape[0])]df['mxbm'] = pd.Series(uuid_list)#生成处理时间import datetimetime_list = [datetime.datetime.now()]* df.shape[0]df['tjsj'] = pd.Series(time_list)#展示前5行df.head()

#循环逐条插入for i in range(df.shape[0]):    sql = "insert into bigdatateam.mx1(mxbm, mxmc, tjsj, zt) values ('"+str(df['mxbm'][i])+"','"+str(df['mxmc'][i])+"',to_timestamp('"+str(df['tjsj'][i])+"','yyyy-mm-dd hh24:mi:ss:ff'), '"+'finished'+"')"    #print('sql = '+sql)    cursor_oracle.execute(sql)connection_oracle.commit()

#关闭游标和连接cursor_oracle.close()connection_oracle.close()

本来插入数据的时候是批量插入的，如下代码所示。但数据库总是报错“非法的变量名/编号”，检查了很久也没发现问题在哪儿，但赶着交东西，就换成逐条插入了。后来又遇到了这个问题，重启了pl/sql和jupyter notebook就好了，迷之神奇~！

def save2oracle(data, clean_data = True):    if clean_data:        cursor_oracle.execute('truncate table bigdatateam.mx')        connection_oracle.commit()        cursor_oracle.execute('select * from bigdatateam.mx')    db_types = [d[1] for d in cursor_oracle.description]    cursor_oracle.bindarraysize = len(data)    cursor_oracle.setinputsizes(*db_types)    sql = '''insert into bigdatateam.mx             (mxbm,mxmc,mxsm,updatetime)             values (:1,:2,:3,:4)          '''    cursor_oracle.executemany(sql, data)    connection_oracle.commit()save2oracle(insert_data, True)