From c9f589c4d5f397bd1049552bbaa04693b0895da4 Mon Sep 17 00:00:00 2001
From: hengsin <hengsin@gmail.com>
Date: Tue, 15 Nov 2022 21:17:02 +0800
Subject: [PATCH] IDEMPIERE-5477 Concurrency issue for the use of OSGi Service
 Tracker (#1563)

---
 .../src/org/adempiere/base/ds/DynamicServiceHolder.java     | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/org.adempiere.base/src/org/adempiere/base/ds/DynamicServiceHolder.java b/org.adempiere.base/src/org/adempiere/base/ds/DynamicServiceHolder.java
index 00cd362263..de9dc2d537 100644
--- a/org.adempiere.base/src/org/adempiere/base/ds/DynamicServiceHolder.java
+++ b/org.adempiere.base/src/org/adempiere/base/ds/DynamicServiceHolder.java
@@ -37,8 +37,10 @@ public class DynamicServiceHolder<T> implements IServiceHolder<T>, IServicesHold
 	 */
 	public DynamicServiceHolder(ServiceTracker<T, T> tracker) {
 		serviceTracker = tracker;
-		if (serviceTracker.getTrackingCount() == -1)
-			serviceTracker.open();
+		synchronized (serviceTracker) {
+			if (serviceTracker.getTrackingCount() == -1)
+				serviceTracker.open();
+		}
 	}
 
 	@Override