diff --git a/src/ioc/misc/dbCore.dbd b/src/ioc/misc/dbCore.dbd
index a2ce45806..067145a01 100644
--- a/src/ioc/misc/dbCore.dbd
+++ b/src/ioc/misc/dbCore.dbd
@@ -22,3 +22,6 @@ variable(callbackParallelThreadsDefault,int)
 
 # Real-time operation
 variable(dbThreadRealtimeLock,int)
+
+# RSRV and dbCa (all local ca contexts)
+variable(caLimitArray, int)
diff --git a/src/ioc/rsrv/caservertask.c b/src/ioc/rsrv/caservertask.c
index c890a8e16..53f4a32d9 100644
--- a/src/ioc/rsrv/caservertask.c
+++ b/src/ioc/rsrv/caservertask.c
@@ -33,6 +33,7 @@
 #include "osiSock.h"
 #include "taskwd.h"
 #include "cantProceed.h"
+#include "epicsExport.h"
 
 #define epicsExportSharedSymbols
 #include "dbChannel.h"
@@ -50,6 +51,7 @@ epicsThreadPrivateId rsrvCurrentClient;
 // defined in cac.cpp
 extern int caLimitArray;
 
+epicsExportAddress(int, caLimitArray);
 
 /*
  *