cx-oracle

问题 I am running Python 2.7 and am using cx_Oracle on a linux 64 bit OS. I need to be able to run against either an 11.2 or 12.1 Oracle client since I can't be sure which client will be installed on the deployed target. I know there are cx_Oracle built against each Oracle client. How can I be sure that the app will work? I should mention I am using pyinstaller to package up the application. Is there a version of cx_Oracle the is built against both Oracle clients or am I required to have two

问题 I'm using cx_Oracle in Python and can't get a variable be used as table name, like in this simple example: query = "select * from some.:usertable.userinfo" bindvars = {'usertable':usertable} cursor.execute(query, bindvars) What is the correct syntax? Variable substition works fine when I use WHERE … etc. but not with table names. I guess I have to separate ":usertable" somehow… 回答1: Database adapters rarely support using parameters for anything that isn't a 'value' (something that needs

问题 I'm trying to CREATE TABLE AS using cx_Oracle on Python 2.4.6 The following code: query = '''CREATE TABLE TMP_STATS_1 AS select NUM from INF_CARD where IMPORT_DATE between to_date(:datepass || ' 00:00:00','dd/mm/yyyy hh24:mi:ss') and to_date(:datepass || ' 23:59:59','dd/mm/yyyy hh24:mi:ss')''' curs.execute(query, datepass=datep) Returns: cx_Oracle.DatabaseError: ORA-01036: illegal variable name/number Taking out the CREATE TABLE TMP_STATS_1 AS and leaving only the SELECT statement, works

问题 I am trying to connect to database using cx_Oracle module i am getting below error server_IP = ipaddress:1221/xyz try: db = cx_Oracle.connect('username', 'password', server_IP) print db except cx_Oracle.DatabaseError as e: error, = e.args if error.code == 1017: print('Please check your credentials.') else: print('Database connection error: %s'.format(e)) raise cx_Oracle.InterfaceError: Unable to acquire Oracle environment handle My question do i need to install any oracle client in linux or

问题 I installed the library and when trying to access SQL in jupyter notebook with my credentials the following error appears: DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client library: "The specified module could not be found". See https://oracle.github.io/odpi/doc/installation.html#windows for help 回答1: Probably you have installed cx_Oracle Python library. In order to execute the DB connectivity through jupyter notebook, you need to install the Oracle Client and that is what missing

问题 I'm currently working on some ETL code to incrementally load data from a source Oracle system to a Postgresql analysis environment with Python as the glue. I am leveraging cx_Oracle as the driver to pull the Oracle data, but I am running into some strange issues with Oracle Date and Python datetime and year 0. As far as I understand, neither Oracle nor Python support year 0. I've isolated a particular row and field with an offending Date: SELECT CAR_RENTAL_DATE, EXTRACT(YEAR FROM CAR_RENTAL

问题 I was trying to connect oracle database using python like below. import cx_Oracle conn = cx_Oracle.connect('user/password@host:port/database') I've faced an error when connecting oracle. DatabaseError: DPI-1047: 64-bit 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#linux for help. I've been struggling to figure it out. I used my user name, password, host, port and

问题 I'm using latest version of python and robot framework with DatabaseLibrary (https://franz-see.github.io/Robotframework-Database-Library/api/1.0.1/DatabaseLibrary.html) And I have problem with SELECT from database when I try using Unicode character like this: select * from labcamprodfull where PRODUCTNAME like '% ščť %' Then I execute/run test and i get this error: UnicodeEncodeError: 'ascii' codec can't encode character '\xae' in position 54: ordinal not in range(128) Here is my code: ***

问题 I try to connect to a remote oracle server by cx_Oracle: db = cx_Oracle.connect('username', 'password', dsn_tns) but it says databaseError: ORA-12541 tns no listener 回答1: This error may occur if the listener.ora file (on the Oracle server itself) is configured to listen for "localhost" instead of the machine name. LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = WN700014 )(PORT = 1521)) ) ) See this post. 回答2: I

问题 I have an SQL file which I want to parse and execute in oracle using cx_Oracle python library. The SQL file contains both classic DML/DDL and PL/SQL, eg. it can look like this: create.sql : -- This is some ; malicious comment CREATE TABLE FOO(id numeric); BEGIN INSERT INTO FOO VALUES(1); INSERT INTO FOO VALUES(2); INSERT INTO FOO VALUES(3); END; / CREATE TABLE BAR(id numeric); if I use this file in SQLDeveloper or SQL*Plus, it will be split into 3 queries and executed. However, cx_Oracle