diff --git a/src/cpp/ripple/Application.cpp b/src/cpp/ripple/Application.cpp
index 7b5dd2191..f62cb0632 100644
--- a/src/cpp/ripple/Application.cpp
+++ b/src/cpp/ripple/Application.cpp
@@ -184,6 +184,10 @@ void Application::setup()
 
 	theApp->getHashNodeDB()->getDB()->executeSQL(boost::str(boost::format("PRAGMA cache_size=-%d;") %
 		(theConfig.getSize(siHashNodeDBCache) * 1024)));
+	theApp->getLedgerDB()->getDB()->executeSQL(boost::str(boost::format("PRAGMA cache_size=-%d;") %
+		(theConfig.getSize(siTxnDBCache) * 1024)));
+	theApp->getTxnDB()->getDB()->executeSQL(boost::str(boost::format("PRAGMA cache_size=-%d;") %
+		(theConfig.getSize(siLgrDBCache) * 1024)));
 
 	//
 	// Allow peer connections.
diff --git a/src/cpp/ripple/Config.cpp b/src/cpp/ripple/Config.cpp
index 8afef2873..096683d3f 100644
--- a/src/cpp/ripple/Config.cpp
+++ b/src/cpp/ripple/Config.cpp
@@ -498,7 +498,9 @@ int Config::getSize(SizedItemName item)
 		{ siLineCacheSize,		{	8192,	32768,	131072,	1048576,	0		} },
 		{ siLineCacheAge,		{	500,	600,	1800,	3600,		7200	} },
 		{ siHashNodeDBCache,	{	24,		48,		64,		128,		256		} },
-			};
+		{ siTxnDBCache,			{	4,		8,		32,		64,			128		} },
+		{ siLgrDBCache,			{	4,		8,		32,		64,			128		} }
+	};
 
 	for (int i = 0; i < (sizeof(sizeTable) / sizeof(SizedItem)); ++i)
 	{
diff --git a/src/cpp/ripple/Config.h b/src/cpp/ripple/Config.h
index 0ceceba59..f6e65856f 100644
--- a/src/cpp/ripple/Config.h
+++ b/src/cpp/ripple/Config.h
@@ -65,7 +65,9 @@ enum SizedItemName
 	siLedgerFetch,
 	siLineCacheSize,
 	siLineCacheAge,
-	siHashNodeDBCache
+	siHashNodeDBCache,
+	siTxnDBCache,
+	siLgrDBCache
 };
 
 struct SizedItem