diff --git a/dbcon/mysql/is_columnstore_extents.cpp b/dbcon/mysql/is_columnstore_extents.cpp
index b5997b3a6..188ce31dc 100644
--- a/dbcon/mysql/is_columnstore_extents.cpp
+++ b/dbcon/mysql/is_columnstore_extents.cpp
@@ -59,7 +59,6 @@ static int generate_result(BRM::OID_t oid, BRM::DBRM* emp, TABLE* table, THD* th
     std::vector<struct BRM::EMEntry>::iterator iter;
     std::vector<struct BRM::EMEntry>::iterator end;
 
-
     emp->getExtents(oid, entries, false, false, true);
 
     if (entries.size() == 0)
@@ -188,6 +187,7 @@ static int is_columnstore_extents_fill(THD* thd, TABLE_LIST* tables, COND* cond)
     BRM::OID_t cond_oid = 0;
     TABLE* table = tables->table;
 
+    BRM::DBRM::refreshShm();
     BRM::DBRM* emp = new BRM::DBRM();
 
     if (!emp || !emp->isDBRMReady())
diff --git a/dbcon/mysql/is_columnstore_files.cpp b/dbcon/mysql/is_columnstore_files.cpp
index 054d9b7d7..a64578acc 100644
--- a/dbcon/mysql/is_columnstore_files.cpp
+++ b/dbcon/mysql/is_columnstore_files.cpp
@@ -207,6 +207,7 @@ static int generate_result(BRM::OID_t oid, BRM::DBRM* emp, TABLE* table, THD* th
 
 static int is_columnstore_files_fill(THD* thd, TABLE_LIST* tables, COND* cond)
 {
+    BRM::DBRM::refreshShm();
     BRM::DBRM* emp = new BRM::DBRM();
     BRM::OID_t cond_oid = 0;
     TABLE* table = tables->table;
diff --git a/versioning/BRM/dbrm.cpp b/versioning/BRM/dbrm.cpp
index 67c1d639b..e6079f252 100644
--- a/versioning/BRM/dbrm.cpp
+++ b/versioning/BRM/dbrm.cpp
@@ -70,7 +70,7 @@ using namespace oam;
 namespace BRM
 {
 
-DBRM::DBRM(bool noBRMinit) throw() : fDebug(false)
+DBRM::DBRM(bool noBRMinit) : fDebug(false)
 {
     if (!noBRMinit)
     {
@@ -1751,7 +1751,7 @@ unsigned DBRM::getExtentRows() throw()
 }
 
 int DBRM::getExtents(int OID, std::vector<struct EMEntry>& entries,
-                     bool sorted, bool notFoundErr, bool incOutOfService) throw()
+                     bool sorted, bool notFoundErr, bool incOutOfService)
 {
 #ifdef BRM_INFO
 
diff --git a/versioning/BRM/dbrm.h b/versioning/BRM/dbrm.h
index db112a9fb..00165f496 100644
--- a/versioning/BRM/dbrm.h
+++ b/versioning/BRM/dbrm.h
@@ -104,9 +104,16 @@ class DBRM
 public:
     // The param noBRMFcns suppresses init of the ExtentMap, VSS, VBBM, and CopyLocks.
     // It can speed up init if the caller only needs the other structures.
-    EXPORT DBRM(bool noBRMFcns = false) throw();
-    EXPORT ~DBRM() throw();
+    EXPORT DBRM(bool noBRMFcns = false);
+    EXPORT ~DBRM();
 
+    EXPORT static void refreshShm()
+    {
+        MasterSegmentTableImpl::refreshShm();
+        ExtentMapImpl::refreshShm();
+        FreeListImpl::refreshShm();
+    }
+    
     // @bug 1055+ - Added functions below for multiple files per OID enhancement.
 
     /** @brief Get the OID, offset, db root, partition, and segment of a logical block ID.
@@ -495,7 +502,7 @@ public:
      */
     EXPORT int getExtents(int OID, std::vector<struct EMEntry>& entries,
                           bool sorted = true, bool notFoundErr = true,
-                          bool incOutOfService = false) throw();
+                          bool incOutOfService = false);
 
     /** @brief Gets the extents of a given OID under specified dbroot
      *
@@ -1015,6 +1022,7 @@ public:
     */
     EXPORT void invalidateUncommittedExtentLBIDs(execplan::CalpontSystemCatalog::SCN txnid,
             std::vector<LBID_t>* plbidList = NULL);
+    
 private:
     DBRM(const DBRM& brm);
     DBRM& operator=(const DBRM& brm);
diff --git a/versioning/BRM/extentmap.h b/versioning/BRM/extentmap.h
index 811745145..6cd628a37 100644
--- a/versioning/BRM/extentmap.h
+++ b/versioning/BRM/extentmap.h
@@ -161,7 +161,17 @@ struct ExtentSorter
 class ExtentMapImpl
 {
 public:
+    ~ExtentMapImpl(){};
+
     static ExtentMapImpl* makeExtentMapImpl(unsigned key, off_t size, bool readOnly = false);
+    static void refreshShm()
+    {
+        if (fInstance)
+        {
+            delete fInstance;
+            fInstance = NULL;
+        }
+    }
 
     inline void grow(unsigned key, off_t size)
 #ifdef NDEBUG
@@ -199,7 +209,6 @@ public:
 
 private:
     ExtentMapImpl(unsigned key, off_t size, bool readOnly = false);
-    ~ExtentMapImpl();
     ExtentMapImpl(const ExtentMapImpl& rhs);
     ExtentMapImpl& operator=(const ExtentMapImpl& rhs);
 
@@ -212,7 +221,17 @@ private:
 class FreeListImpl
 {
 public:
+    ~FreeListImpl(){};
+
     static FreeListImpl* makeFreeListImpl(unsigned key, off_t size, bool readOnly = false);
+    static void refreshShm()
+    {
+        if (fInstance)
+        {
+            delete fInstance;
+            fInstance = NULL;
+        }
+    }
 
     inline void grow(unsigned key, off_t size)
 #ifdef NDEBUG
@@ -250,7 +269,6 @@ public:
 
 private:
     FreeListImpl(unsigned key, off_t size, bool readOnly = false);
-    ~FreeListImpl();
     FreeListImpl(const FreeListImpl& rhs);
     FreeListImpl& operator=(const FreeListImpl& rhs);
 
diff --git a/versioning/BRM/mastersegmenttable.h b/versioning/BRM/mastersegmenttable.h
index c8f9d19c5..e71a1556d 100644
--- a/versioning/BRM/mastersegmenttable.h
+++ b/versioning/BRM/mastersegmenttable.h
@@ -64,14 +64,23 @@ struct MSTEntry
 class MasterSegmentTableImpl
 {
 public:
+    ~MasterSegmentTableImpl(){};
     static MasterSegmentTableImpl* makeMasterSegmentTableImpl(int key, int size);
 
+    static void refreshShm()
+    {
+        if (fInstance)
+        {
+            delete fInstance;
+            fInstance = NULL;
+        }
+    }
+    
     boost::interprocess::shared_memory_object fShmobj;
     boost::interprocess::mapped_region fMapreg;
-
+    
 private:
     MasterSegmentTableImpl(int key, int size);
-    ~MasterSegmentTableImpl();
     MasterSegmentTableImpl(const MasterSegmentTableImpl& rhs);
     MasterSegmentTableImpl& operator=(const MasterSegmentTableImpl& rhs);
 
@@ -90,7 +99,6 @@ public:
      * @note Throws runtime_error on a semaphore-related error.
      */
     EXPORT MasterSegmentTable();
-    //MasterSegmentTable(const MasterSegmentTable& mst);
     EXPORT ~MasterSegmentTable();
 
     /// specifies the Extent Map table