From aaa0b462d9504a5713168279ae56ef38c5f4ff8a Mon Sep 17 00:00:00 2001
From: Ally Heev <allyheev@gmail.com>
Date: Sat, 30 May 2026 15:56:30 +0530
Subject: [PATCH] fix buffer manager frame group limit err msg

---
 src/storage/buffer_manager/vm_region.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/storage/buffer_manager/vm_region.cpp b/src/storage/buffer_manager/vm_region.cpp
index 0e5d48d162..5c31b967dd 100644
--- a/src/storage/buffer_manager/vm_region.cpp
+++ b/src/storage/buffer_manager/vm_region.cpp
@@ -86,7 +86,10 @@ frame_group_idx_t VMRegion::addNewFrameGroup() {
     std::unique_lock xLck{mtx};
     if (numFrameGroups >= maxNumFrameGroups) {
         // LCOV_EXCL_START
-        throw BufferManagerException("No more frame groups can be added to the allocator.");
+        throw BufferManagerException(
+            std::format("Maximum database size of {} bytes has been reached. "
+                        "Reopen the database with a larger max_db_size to continue.",
+                getMaxRegionSize()));
         // LCOV_EXCL_STOP
     }
     return numFrameGroups++;