diff --git a/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSession.java b/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSession.java
index c5bfbe37e8c0beacfcde87e1ed9de5e74b3c3bee..a892b9029ede808ae6fc0e9c4e3cbea98b0eb3cd 100644
--- a/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSession.java
+++ b/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSession.java
@@ -51,6 +51,7 @@ public class RedissonSession extends StandardSession {
     public static final Set<String> ATTRS = new HashSet<String>(Arrays.asList(IS_NEW_ATTR, IS_VALID_ATTR, 
             THIS_ACCESSED_TIME_ATTR, MAX_INACTIVE_INTERVAL_ATTR, LAST_ACCESSED_TIME_ATTR, CREATION_TIME_ATTR));
     
+    private boolean loaded;
     private final RedissonSessionManager redissonManager;
     private final Map<String, Object> attrs;
     private RMap<String, Object> map;
@@ -87,6 +88,17 @@ public class RedissonSession extends StandardSession {
             }
 
             return map.get(name);
+        } else {
+            if (!loaded) {
+                synchronized (this) {
+                    if (!loaded) {
+                        Map<String, Object> storedAttrs = map.readAllMap();
+                        
+                        load(storedAttrs);
+                        loaded = true;
+                    }
+                }
+            }
         }
 
         return super.getAttribute(name);
diff --git a/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSessionManager.java b/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
index e90d93e3a781348f10de6bc2580e6bc4fde714bf..c9b253d91e6d246abd85fa9179e1937d2ad41374 100644
--- a/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
+++ b/redisson-tomcat/redisson-tomcat-6/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
@@ -170,13 +170,9 @@ public class RedissonSessionManager extends ManagerBase implements Lifecycle {
             if (id != null) {
                 Map<String, Object> attrs = new HashMap<String, Object>();
                 try {
-                    if (readMode == ReadMode.MEMORY) {
-                        attrs = getMap(id).readAllMap();
-                    } else {
-                        attrs = getMap(id).getAll(RedissonSession.ATTRS);
-                    }
+                    attrs = getMap(id).getAll(RedissonSession.ATTRS);
                 } catch (Exception e) {
-                    throw new IOException(e);
+                    log.error("Can't read session object by id: " + id, e);
                 }
                 
                 RedissonSession session = (RedissonSession) createEmptySession();
diff --git a/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSession.java b/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSession.java
index ffa57bf25e26e34fa16c3e63ee988b7957e24163..3a783fdf0050f075ea7913349fef87c556595e73 100644
--- a/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSession.java
+++ b/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSession.java
@@ -51,6 +51,7 @@ public class RedissonSession extends StandardSession {
     public static final Set<String> ATTRS = new HashSet<String>(Arrays.asList(IS_NEW_ATTR, IS_VALID_ATTR, 
             THIS_ACCESSED_TIME_ATTR, MAX_INACTIVE_INTERVAL_ATTR, LAST_ACCESSED_TIME_ATTR, CREATION_TIME_ATTR));
     
+    private boolean loaded;
     private final RedissonSessionManager redissonManager;
     private final Map<String, Object> attrs;
     private RMap<String, Object> map;
@@ -87,6 +88,17 @@ public class RedissonSession extends StandardSession {
             }
 
             return map.get(name);
+        } else {
+            if (!loaded) {
+                synchronized (this) {
+                    if (!loaded) {
+                        Map<String, Object> storedAttrs = map.readAllMap();
+                        
+                        load(storedAttrs);
+                        loaded = true;
+                    }
+                }
+            }
         }
 
         return super.getAttribute(name);
diff --git a/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSessionManager.java b/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
index 1ec7fb81435da8aa1e191290051d380362950424..4fa38c3bb3cb21f6cfc17339c4dcac217f8015dd 100644
--- a/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
+++ b/redisson-tomcat/redisson-tomcat-7/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
@@ -148,13 +148,9 @@ public class RedissonSessionManager extends ManagerBase {
             if (id != null) {
                 Map<String, Object> attrs = new HashMap<String, Object>();
                 try {
-                    if (readMode == ReadMode.MEMORY) {
-                        attrs = getMap(id).readAllMap();
-                    } else {
-                        attrs = getMap(id).getAll(RedissonSession.ATTRS);
-                    }
+                    attrs = getMap(id).getAll(RedissonSession.ATTRS);
                 } catch (Exception e) {
-                    throw new IOException(e);
+                    log.error("Can't read session object by id: " + id, e);
                 }
                 
                 RedissonSession session = (RedissonSession) createEmptySession();
diff --git a/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSession.java b/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSession.java
index 23c4c55a961fba055dd01832e1b037d770d7454e..a273225ad2f3f1815cac1529de39e6d8fddab1dc 100644
--- a/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSession.java
+++ b/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSession.java
@@ -51,6 +51,7 @@ public class RedissonSession extends StandardSession {
     public static final Set<String> ATTRS = new HashSet<String>(Arrays.asList(IS_NEW_ATTR, IS_VALID_ATTR, 
             THIS_ACCESSED_TIME_ATTR, MAX_INACTIVE_INTERVAL_ATTR, LAST_ACCESSED_TIME_ATTR, CREATION_TIME_ATTR));
     
+    private boolean loaded;
     private final RedissonSessionManager redissonManager;
     private final Map<String, Object> attrs;
     private RMap<String, Object> map;
@@ -87,6 +88,17 @@ public class RedissonSession extends StandardSession {
             }
 
             return map.get(name);
+        } else {
+            if (!loaded) {
+                synchronized (this) {
+                    if (!loaded) {
+                        Map<String, Object> storedAttrs = map.readAllMap();
+                        
+                        load(storedAttrs);
+                        loaded = true;
+                    }
+                }
+            }
         }
 
         return super.getAttribute(name);
diff --git a/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSessionManager.java b/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
index a4a7b8363100da4cb9b42b2d6e85a65cf6b3ae39..8fc03d2bb2746a7a8baf2ad283a571a5fc22d3fa 100644
--- a/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
+++ b/redisson-tomcat/redisson-tomcat-8/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
@@ -147,13 +147,9 @@ public class RedissonSessionManager extends ManagerBase {
             if (id != null) {
                 Map<String, Object> attrs = new HashMap<String, Object>();
                 try {
-                    if (readMode == ReadMode.MEMORY) {
-                        attrs = getMap(id).readAllMap();
-                    } else {
-                        attrs = getMap(id).getAll(RedissonSession.ATTRS);
-                    }
+                    attrs = getMap(id).getAll(RedissonSession.ATTRS);
                 } catch (Exception e) {
-                    throw new IOException(e);
+                    log.error("Can't read session object by id: " + id, e);
                 }
                 
                 RedissonSession session = (RedissonSession) createEmptySession();
diff --git a/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSession.java b/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSession.java
index ee9b0a2e27006f924780a9b08d36d26bc09b5faf..b3a14dec07829db5f86efe00bb68d5b5d4afeb0c 100644
--- a/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSession.java
+++ b/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSession.java
@@ -51,6 +51,7 @@ public class RedissonSession extends StandardSession {
     public static final Set<String> ATTRS = new HashSet<String>(Arrays.asList(IS_NEW_ATTR, IS_VALID_ATTR, 
             THIS_ACCESSED_TIME_ATTR, MAX_INACTIVE_INTERVAL_ATTR, LAST_ACCESSED_TIME_ATTR, CREATION_TIME_ATTR));
     
+    private boolean loaded;
     private final RedissonSessionManager redissonManager;
     private final Map<String, Object> attrs;
     private RMap<String, Object> map;
@@ -87,6 +88,17 @@ public class RedissonSession extends StandardSession {
             }
 
             return map.get(name);
+        } else {
+            if (!loaded) {
+                synchronized (this) {
+                    if (!loaded) {
+                        Map<String, Object> storedAttrs = map.readAllMap();
+                        
+                        load(storedAttrs);
+                        loaded = true;
+                    }
+                }
+            }
         }
 
         return super.getAttribute(name);
diff --git a/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSessionManager.java b/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
index a4a7b8363100da4cb9b42b2d6e85a65cf6b3ae39..8fc03d2bb2746a7a8baf2ad283a571a5fc22d3fa 100644
--- a/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
+++ b/redisson-tomcat/redisson-tomcat-9/src/main/java/org/redisson/tomcat/RedissonSessionManager.java
@@ -147,13 +147,9 @@ public class RedissonSessionManager extends ManagerBase {
             if (id != null) {
                 Map<String, Object> attrs = new HashMap<String, Object>();
                 try {
-                    if (readMode == ReadMode.MEMORY) {
-                        attrs = getMap(id).readAllMap();
-                    } else {
-                        attrs = getMap(id).getAll(RedissonSession.ATTRS);
-                    }
+                    attrs = getMap(id).getAll(RedissonSession.ATTRS);
                 } catch (Exception e) {
-                    throw new IOException(e);
+                    log.error("Can't read session object by id: " + id, e);
                 }
                 
                 RedissonSession session = (RedissonSession) createEmptySession();