103 lines
3.6 KiB
JavaScript
103 lines
3.6 KiB
JavaScript
/* Copyright (c) 2015, 2022, Oracle and/or its affiliates. */
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/******************************************************************************
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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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* NAME
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* endtoend.js
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*
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* DESCRIPTION
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* Sets connection metadata for end-to-end tracing and client authorization.
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*
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* While the script sleeps (keeping the connection open), use SQL*Plus as a privileged user to execute:
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* SELECT username, client_identifier, action, module FROM v$session WHERE username IS NOT NULL;
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* The end-to-end tracing attributes are shown in various other DBA views and in Enterprise Manager.
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*
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* This example uses Node 8's async/await syntax.
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*
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*****************************************************************************/
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const fs = require('fs');
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const oracledb = require('oracledb');
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const dbConfig = require('./dbconfig.js');
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// On Windows and macOS, you can specify the directory containing the Oracle
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// Client Libraries at runtime, or before Node.js starts. On other platforms
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// the system library search path must always be set before Node.js is started.
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// See the node-oracledb installation documentation.
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// If the search path is not correct, you will get a DPI-1047 error.
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let libPath;
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if (process.platform === 'win32') { // Windows
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libPath = 'C:\\oracle\\instantclient_19_12';
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} else if (process.platform === 'darwin') { // macOS
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libPath = process.env.HOME + '/Downloads/instantclient_19_8';
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}
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if (libPath && fs.existsSync(libPath)) {
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oracledb.initOracleClient({ libDir: libPath });
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}
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async function run() {
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let connection;
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try {
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connection = await oracledb.getConnection(dbConfig);
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// These end-to-end tracing attributes are sent to the database on
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// the next 'round trip' i.e. with execute()
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connection.clientId = "Chris";
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connection.module = "End-to-end example";
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connection.action = "Query departments";
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console.log("Use SQL*Plus as SYSTEM (or ADMIN for Oracle Cloud databases) to execute the query:");
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console.log(" SELECT username, client_identifier, action, module FROM v$session WHERE username = UPPER('" + dbConfig.user + "');");
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// Sleep 10 seconds to keep the connection open. This allows
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// external queries on V$SESSION to show the connection
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// attributes before the connection is closed.
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await connection.execute(`BEGIN DBMS_SESSION.SLEEP(10); END;`);
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} catch (err) {
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console.error(err);
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} finally {
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if (connection) {
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try {
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await connection.close();
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} catch (err) {
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console.error(err);
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}
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}
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}
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}
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process
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.once('SIGTERM', function() {
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console.log("\nTerminating");
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process.exit(0);
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})
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.once('SIGINT', function() {
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console.log("\nTerminating");
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process.exit(0);
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});
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run();
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