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#------------------------------------------------------------------------------
# clob.py (Section 7.1)
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
#------------------------------------------------------------------------------
from __future__ import print_function
import cx_Oracle
import db_config
con = cx_Oracle.connect(db_config.user, db_config.pw, db_config.dsn)
cur = con.cursor()
print("Inserting data...")
cur.execute("truncate table testclobs")
longString = ""
for i in range(5):
    char = chr(ord('A') + i)
    longString += char * 250
    cur.execute("insert into testclobs values (:1, :2)",
                   (i + 1, "String data " + longString + ' End of string'))
con.commit()
print("Querying data...")
cur.prepare("select * from testclobs where id = :id")
cur.execute(None, {'id': 1})
(id, clob) = cur.fetchone()
print("CLOB length:", clob.size())
clobdata = clob.read()
print("CLOB data:", clobdata)

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