73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2020, 2022, Oracle and/or its affiliates.
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#
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# This software is dual-licensed to you under the Universal Permissive License
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# (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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# 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
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# either license.
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#
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# If you elect to accept the software under the Apache License, Version 2.0,
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# the following applies:
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# dbms_output.py
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#
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# Demonstrates one method of fetching the lines produced by the DBMS_OUTPUT
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# package.
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#------------------------------------------------------------------------------
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import oracledb
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import sample_env
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# determine whether to use python-oracledb thin mode or thick mode
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if not sample_env.get_is_thin():
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oracledb.init_oracle_client(lib_dir=sample_env.get_oracle_client())
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connection = oracledb.connect(user=sample_env.get_main_user(),
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password=sample_env.get_main_password(),
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dsn=sample_env.get_connect_string())
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with connection.cursor() as cursor:
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# enable DBMS_OUTPUT
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cursor.callproc("dbms_output.enable")
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# execute some PL/SQL that generates output with DBMS_OUTPUT.PUT_LINE
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cursor.execute("""
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begin
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dbms_output.put_line('This is some text');
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dbms_output.put_line('');
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dbms_output.put_line('Demonstrating use of DBMS_OUTPUT');
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end;""")
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# tune this size for your application
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chunk_size = 10
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# create variables to hold the output
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lines_var = cursor.arrayvar(str, chunk_size)
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num_lines_var = cursor.var(int)
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num_lines_var.setvalue(0, chunk_size)
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# fetch the text that was added by PL/SQL
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while True:
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cursor.callproc("dbms_output.get_lines", (lines_var, num_lines_var))
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num_lines = num_lines_var.getvalue()
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lines = lines_var.getvalue()[:num_lines]
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for line in lines:
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print(line or "")
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if num_lines < chunk_size:
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break
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