diff --git a/be/src/common/config.h b/be/src/common/config.h
index ddca6bc447..ee8698bcb5 100644
--- a/be/src/common/config.h
+++ b/be/src/common/config.h
@@ -687,7 +687,7 @@ CONF_Int32(send_batch_thread_pool_queue_size, "102400");
 CONF_mInt32(max_segment_num_per_rowset, "200");
 
 // The connection timeout when connecting to external table such as odbc table.
-CONF_mInt32(external_table_connect_timeout_sec, "5");
+CONF_mInt32(external_table_connect_timeout_sec, "30");
 
 // The capacity of lur cache in segment loader.
 // Althought it is called "segment cache", but it caches segments in rowset granularity.