Export Oracle Database to CSV using cx_Oracle (Python recipe) by FB36

ActiveState Code (http://code.activestate.com/recipes/577304/)

# Export Oracle database tables to CSV files
# FB36 - 201007117

import sys
import csv
import cx_Oracle

connection = raw_input("Enter Oracle DB connection (uid/pwd@database) : ")
orcl = cx_Oracle.connect(connection)
curs = orcl.cursor()

printHeader = True # include column headers in each table output

sql = "select * from tab" # get a list of all tables
curs.execute(sql)

for row_data in curs:
    if not row_data[0].startswith('BIN$'): # skip recycle bin tables
        tableName = row_data[0]

        # output each table content to a separate CSV file
        csv_file_dest = tableName + ".csv"
        outputFile = open(csv_file_dest,'w') # 'wb'
        output = csv.writer(outputFile, dialect='excel')
        sql = "select * from " + tableName
        curs2 = orcl.cursor()
        curs2.execute(sql)

        if printHeader: # add column headers if requested
            cols = []
            for col in curs2.description:
                cols.append(col[0])
            output.writerow(cols)

        for row_data in curs2: # add table rows
            output.writerow(row_data)

        outputFile.close()