--- java/org/apache/catalina/loader/WebappClassLoaderBase.java	(revision 1816793)
+++ java/org/apache/catalina/loader/WebappClassLoaderBase.java	(working copy)
@@ -371,6 +371,10 @@ 
      */
     protected long lastJarAccessed = 0L;
 
+    /**
+     * The interval in milliseconds that we can keep jar files open.
+     */
+    protected int jarOpenInterval = 90000;
 
     /**
      * The list of local repositories, in the order they should be searched
@@ -656,8 +660,22 @@ 
 
     }
 
+    /**
+     * Set the interval to keep all jar files open
+     * @param jarOpenInterval the interval in milliseconds to keep jar files open
+     */
+    public void setJarOpenInterval(int jarOpenInterval) {
+        this.jarOpenInterval = jarOpenInterval;
+    }
 
     /**
+     * Return the interval to keep all jar files open if no jar is accessed
+     */
+    public int getJarOpenInterval() {
+        return jarOpenInterval;
+    }
+
+    /**
      * @return Returns the antiJARLocking.
      */
     public boolean getAntiJARLocking() {
@@ -987,6 +1005,7 @@ 
         base.contextName = this.contextName;
         base.hasExternalRepositories = this.hasExternalRepositories;
         base.searchExternalFirst = this.searchExternalFirst;
+        base.jarOpenInterval = this.jarOpenInterval;
     }
 
 
@@ -2176,8 +2195,8 @@ 
     public void closeJARs(boolean force) {
         if (jarFiles.length > 0) {
                 synchronized (jarFiles) {
-                    if (force || (System.currentTimeMillis()
-                                  > (lastJarAccessed + 90000))) {
+                    if (force || (jarOpenInterval > 0 && System.currentTimeMillis()
+                            > (lastJarAccessed + jarOpenInterval))) {
                         for (int i = 0; i < jarFiles.length; i++) {
                             try {
                                 if (jarFiles[i] != null) {
--- java/org/apache/catalina/loader/WebappLoader.java	(revision 1816793)
+++ java/org/apache/catalina/loader/WebappLoader.java	(working copy)
@@ -137,6 +137,10 @@ 
      */
     private boolean delegate = false;
 
+    /**
+     * The interval in milliseconds to keep all jar files open if no jar is accessed
+     */
+    private int jarOpenInterval = 90000;
 
     /**
      * The descriptive information about this Loader implementation.
@@ -282,8 +286,23 @@ 
 
     }
 
+    /**
+     * The interval to keep all jar files open if no jar is accessed
+     *
+     * @param jarOpenInterval The new interval
+     */
+    public void setJarOpenInterval(int jarOpenInterval) {
+        this.jarOpenInterval = jarOpenInterval;
+    }
 
     /**
+     * Return the interval to keep all jar files open if no jar is accessed
+     */
+    public int getJarOpenInterval() {
+        return jarOpenInterval;
+    }
+
+    /**
      * Return descriptive information about this Loader implementation and
      * the corresponding version number, in the format
      * <code>&lt;description&gt;/&lt;version&gt;</code>.
@@ -580,6 +599,7 @@ 
         try {
 
             classLoader = createClassLoader();
+            classLoader.setJarOpenInterval(this.jarOpenInterval);
             classLoader.setResources(container.getResources());
             classLoader.setDelegate(this.delegate);
             classLoader.setSearchExternalFirst(searchExternalFirst);
--- java/org/apache/catalina/loader/mbeans-descriptors.xml	(revision 1816793)
+++ java/org/apache/catalina/loader/mbeans-descriptors.xml	(working copy)
@@ -169,6 +169,10 @@ 
              writeable="false" 
                  type="java.lang.String"/>
 
+    <attribute   name="jarOpenInterval"
+                 description="The interval in milliseconds to keep all jar files open if no jar is accessed"
+                 type="int"/>
+
   </mbean>
 
   <mbean         name="ParallelWebappClassLoader"
@@ -213,6 +217,10 @@ 
              writeable="false" 
                  type="java.lang.String"/>
 
+    <attribute   name="jarOpenInterval"
+                 description="The interval in milliseconds to keep all jar files open if no jar is accessed"
+                 type="int"/>
+
   </mbean>
 
 </mbeans-descriptors>