From 96b9321d139c5365048ca317252b848074c427c5 Mon Sep 17 00:00:00 2001
From: Sergey Konovalov <Sergey.Konovalov@onlyoffice.com>
Date: Wed, 13 Aug 2025 01:34:16 +0300
Subject: [PATCH] [feature] Allow Oracle DB thick mode

---
 Common/config/default.json                          |  1 +
 .../sources/databaseConnectors/oracleConnector.js   | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/Common/config/default.json b/Common/config/default.json
index d57ac448..8d572c46 100644
--- a/Common/config/default.json
+++ b/Common/config/default.json
@@ -409,6 +409,7 @@
 					"queueTimeout": 60000
 				},
 				"oracleExtraOptions": {
+					"thin": true,
 					"connectTimeout": 60
 				},
 				"msSqlExtraOptions": {
diff --git a/DocService/sources/databaseConnectors/oracleConnector.js b/DocService/sources/databaseConnectors/oracleConnector.js
index 287e4c3b..ff0dcfb4 100644
--- a/DocService/sources/databaseConnectors/oracleConnector.js
+++ b/DocService/sources/databaseConnectors/oracleConnector.js
@@ -36,6 +36,7 @@ const oracledb = require('oracledb');
 const config = require('config');
 const connectorUtilities = require('./connectorUtilities');
 const utils = require('../../../Common/sources/utils');
+const operationContext = require('../../../Common/sources/operationContext');
 
 const configSql = config.get('services.CoAuthoring.sql');
 const cfgTableResult = configSql.get('tableResult');
@@ -55,6 +56,18 @@ const connectionConfiguration = {
   poolMax: configSql.get('connectionlimit')
 };
 const additionalOptions = config.util.cloneDeep(configSql.get('oracleExtraOptions'));
+// Initialize thick mode
+if (additionalOptions?.thin === false) {
+  try {
+    oracledb.initOracleClient(additionalOptions?.libDir ? { libDir: additionalOptions.libDir } : {});
+  } catch (err) {
+    operationContext.global.logger.error('Failed to initialize thick Oracle client:', err);
+  }
+}
+// Remove Oracle client options before creating connection config
+delete additionalOptions.thin;
+delete additionalOptions.libDir;
+
 const configuration = Object.assign({}, connectionConfiguration, additionalOptions);
 const forceClosingCountdownMs = 2000;
 let pool = null;