Created
August 23, 2019 08:01
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Script python load DBF file do Oracle Table
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| #!/usr/bin/env python | |
| # -*- coding: utf-8 -*- | |
| """ | |
| dbf2oracle - convert dbf files into Oracle database | |
| Todo: | |
| - -v --verbose option | |
| - handle existing table (-f option?) | |
| - primary key option? (make first column primary key) | |
| - create only option? | |
| - insert only option? | |
| - options to select columns to insert? | |
| """ | |
| import os | |
| import sys | |
| import argparse | |
| import traceback | |
| from dbfread import DBF | |
| try: | |
| import cx_Oracle | |
| except (ImportError, e): | |
| raise ImportError( | |
| str(e) + """ Was not found. Make sure you have it installed""") | |
| username = 'DbUser' | |
| password = 'secret' | |
| sid = 'ORCL' | |
| typemap = { | |
| 'F': 'NUMBER', | |
| 'L': 'VARCHAR2', | |
| 'I': 'INTEGER', | |
| 'C': 'VARCHAR2', | |
| 'N': 'NUMBER', # because it can be integer or float | |
| 'M': 'VARCHAR2', | |
| 'D': 'DATE', | |
| 'T': 'DATE', | |
| '0': 'INTEGER', | |
| } | |
| def add_table(cursor, table): | |
| """Add a dbase table to an open Oracle database.""" | |
| # cursor.execute('drop table if exists %s' % table.name) | |
| field_types = {} | |
| for f in table.fields: | |
| field_types[f.name] = typemap.get(f.type, 'VARCHAR2') | |
| # | |
| # Create the table | |
| # | |
| defs = ', '.join(['%s %s' % (f, field_types[f]) | |
| for f in table.field_names]) | |
| sql = 'create table "%s" (%s)' % (table.name, defs) | |
| # print(sql) | |
| cursor.execute(sql) | |
| # Create data rows | |
| refs = ', '.join([':' + f for f in table.field_names]) | |
| sql = 'insert into %s values (%s)' % (table.name, refs) | |
| print(sql) | |
| i = 0 | |
| for rec in table: | |
| i = i+1 | |
| # print(list(rec.values())) | |
| cursor.execute(sql, list(rec.values())) | |
| if i == 5000: | |
| print("5000 registros. Commit....") | |
| i = 0 | |
| cursor.connection.commit() | |
| def parse_args(): | |
| parser = argparse.ArgumentParser( | |
| description='usage: %prog [OPTIONS] table1.dbf ... tableN.dbf') | |
| arg = parser.add_argument | |
| arg('-e', '--encoding', | |
| action='store', | |
| dest='encoding', | |
| default=None, | |
| help='character encoding in DBF file') | |
| arg('--char-decode-errors', | |
| action='store', | |
| dest='char_decode_errors', | |
| default='strict', | |
| help='how to handle decode errors (see pydoc bytes.decode)') | |
| arg('tables', | |
| metavar='TABLE', | |
| nargs='+', | |
| help='tables to add to Oracle database') | |
| return parser.parse_args() | |
| def main(): | |
| args = parse_args() | |
| conn = cx_Oracle.connect(username, password, sid, encoding="cp850") | |
| cursor = conn.cursor() | |
| for table_file in args.tables: | |
| try: | |
| add_table(cursor, DBF(table_file, | |
| lowernames=True, | |
| encoding=args.encoding, | |
| char_decode_errors=args.char_decode_errors)) | |
| except UnicodeDecodeError as err: | |
| traceback.print_exc() | |
| sys.exit('Please use --encoding or --char-decode-errors.') | |
| conn.commit() | |
| if __name__ == '__main__': | |
| main() |
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