--- a/src/java.naming/share/classes/com/sun/jndi/ldap/LdapCtx.java	Wed Aug 14 00:18:00 2019 -0400
+++ b/src/java.naming/share/classes/com/sun/jndi/ldap/LdapCtx.java	Wed Aug 14 11:14:54 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -224,7 +224,6 @@
     String hostname = null;             // host name of server (no brackets
                                         //   for IPv6 literals)
     LdapClient clnt = null;             // connection handle
-    private boolean reconnect = false;  // indicates that re-connect requested
     Hashtable<String, java.lang.Object> envprops = null; // environment properties of context
     int handleReferrals = DEFAULT_REFERRAL_MODE; // how referral is handled
     boolean hasLdapsScheme = false;     // true if the context was created
@@ -2668,7 +2667,6 @@
         }
 
         sharable = false;  // can't share with existing contexts
-        reconnect = true;
         ensureOpen();      // open or reauthenticated
     }
 
@@ -2693,7 +2691,8 @@
                 synchronized (clnt) {
                     if (!clnt.isLdapv3
                         || clnt.referenceCount > 1
-                        || clnt.usingSaslStreams()) {
+                        || clnt.usingSaslStreams()
+                        || !clnt.conn.useable) {
                         closeConnection(SOFT_CLOSE);
                     }
                 }
@@ -2745,7 +2744,7 @@
         try {
             boolean initial = (clnt == null);
 
-            if (initial || reconnect) {
+            if (initial) {
                 ldapVersion = (ver != null) ? Integer.parseInt(ver) :
                     DEFAULT_LDAP_VERSION;
 
@@ -2773,8 +2772,6 @@
                     // Required for SASL client identity
                     envprops);
 
-                reconnect = false;
-
                 /**
                  * Pooled connections are preauthenticated;
                  * newly created ones are not.