diff --git a/src/rpc/src/rpcMain.c b/src/rpc/src/rpcMain.c
index db3c72c2fc8a1a1c326c37974bfde0741f93004b..2ec508f050ea7cf916f8b1c1e6ff37d18fb96523 100644
--- a/src/rpc/src/rpcMain.c
+++ b/src/rpc/src/rpcMain.c
@@ -295,7 +295,7 @@ void *rpcOpen(const SRpcInit *pInit) {
       return NULL;
     }
   } else {
-    pRpc->pCache = rpcOpenConnCache(pRpc->sessions, rpcCloseConn, pRpc->tmrCtrl, pRpc->idleTime * 30); 
+    pRpc->pCache = rpcOpenConnCache(pRpc->sessions, rpcCloseConn, pRpc->tmrCtrl, pRpc->idleTime * 20); 
     if ( pRpc->pCache == NULL ) {
       tError("%s failed to init connection cache", pRpc->label);
       rpcClose(pRpc);