cx-oracle

问题 I have a problem. When I pass a Python array: self.notPermited = [2,3] This is my procedure def select_ids_entre_amistades(self,cod_us,ids_not): lista = [] try: cursor = self.__cursor.var(cx_Oracle.CURSOR) print ids_not data = self.__cursor.arrayvar(cx_Oracle.NUMBER, ids_not) print data l_query = self.__cursor.callproc("SCHEMA.PROC_SELECT_IDS_ENT_AMISTADES", [cursor,cod_us,data]) lista = l_query[0] return lista except cx_Oracle.DatabaseError as ex: error, = ex.args print(error.message) return

问题 I am using cx_Oracle library in my python script. My code works fine if I directly execute by python script from Linux terminal but when I put it in crontab I am getting following error. !!DatabaseError: DPI-1047: Oracle Client library cannot be loaded: libclntsh.so: cannot open shared object file: No such file or directory. See https://oracle.github.io/odpi/doc/installation.html for help DPI-1005: unable to acquire Oracle environment handle !!Traceback (most recent call last): import cx

问题 I have var='smth' and I need to check if var exists in the table 'smtb' I tried something this, but it does not work: rows=curs.fetchall() for row in rows: if var==row: print("Yes") When I print elements of rows, I get some pattern like this: ('element',) How can I check whether var exists in the table? 回答1: Don't do this in Python. If you want to search for something in a database table by far the quickest and most efficient way is to do it in SQL. Don't forget to use bind variables.

问题 I am retrieving a load of data from one oracle database and then inserting it into another non linked database that is structurally the same. I am doing it by doing: select * from xxx where id = parameter and Select COLUMN_NAME from user_tab_columns where table_name=xxx then with zip putting them in a dictionary as table_name:Data to build the insert from Problem is it is returning the date fields as datetime.datetime(99, 12, 31, 0, 0). I need this as 31-dec-2999. How can I get it to return

问题 Given the following kind of data in a column of a Pandas data frame (Pandas data type is datetime64[ns]: Contract_EffDt 1974-02-01 I want to import this (along with some string and int columns) into Oracle like this: import cx_Oracle as cx . . . cur.setinputsizes(25,25,255,255,25,25,25,255,255,25,25,cx.DATE,int) cur=con.cursor() cur.bindarraysize = 1000 cur.executemany('''insert into Table(Contract_ID,Plan_ID,Org_Type,Plan_Type,Offers_Part_D,SNP_Plan,\ EGHP,Org_Name,Org_Mkt_Name,Plan_Name

问题 I'm working with Python2.7, Celery and cx_Oracle to access the Oracle database. I create a lot of tasks. Each task runs a query through cx_Oracle. Many of this tasks will run simultaneously. All tasks should share the same database connection. If I only launch one task, the query gets run correctly. However, if I launch several queries, I start getting this error message: [2016-04-04 17:12:43,846: ERROR/MainProcess] Task tasks.run_query[574a6e7f-f58e-4b74-bc84-af4555af97d6] raised unexpected:

问题 For some reason, the following code only returns a dataframe of 10 rows instead of 20 (there are millions of rows in the SQL view). When I viewed the output from print(data2), it showed the first 10 rows as a DataFrame, but the next DataFrame was empty. import cx_Oracle as cx import pandas as pd conn = cx.Connection("username/pwd@server") data = pd.DataFrame([]) SQL1 = '''SELECT * FROM TABLE_MV where rownum between ''' for i in range(1, 20, 10): lower = i upper = i+9 SQL3 = SQL1 + str(lower)

问题 Couldn't find a solution for my problem using search so I created this topic. I'm having problems when connecting to Oracle database using DataBase libary and cx_Oracle module. In python import cx_Oracle works great (returns no error), but when I try to connect to DB on RobotFramework with Connect To Database Using Custom Params | cx_Oracle | 'user', 'pass', 'host/db' I get an error : FAIL : InternalError: No Oracle error? If I try to connect to database using Connect To Database |

问题 I am trying to retrieve data from database and save it into excel/csv file, There is column containing blob data , i have to save that data in .zip format in a local folder with name of that file (i.e., the name of the file containing that blob data, which is already a column value in my database). I have written the below code to store all the non blob column in my excel but i am not able to fetch that blob column from db and save it into the folder. Please suggest. import os import cx

问题 I have one row in my oracle cache table. I'm trying to clear it using standard django way: from django.core.cache import cache cache.clear() But it doesn't work! The row is still in my cache table. So I run python manage.py sell and put some code from DatabaseCache.clear() method: from django.db import connections table = connections['cache'].ops.quote_name('ws_cache_table') cursor = connections['cache'].cursor() cursor.execute('DELETE FROM %s' % table) But it doesn't work either... I don't