From d03e9af0b7262bce1497ba8e49a7096279e9d7cd Mon Sep 17 00:00:00 2001
From: Classic298 <27028174+Classic298@users.noreply.github.com>
Date: Fri, 31 Jul 2026 23:31:14 +0200
Subject: [PATCH] perf: use the orjson codec to parse Oracle vector metadata
 (#27813)

`_json_to_metadata` parses the metadata of every result row returned by search and get. It now goes through `JSONCodec`, which selects orjson when `ENABLE_ORJSON` is set.

The text it parses is produced by Oracle's own `JSON_SERIALIZE`, and the column is a native `JSON` type, so the database normalises whatever was written and the reader never depends on the writer's escaping.

The matching `_metadata_to_json` write deliberately keeps stdlib `json`: it passes `default=self._decimal_handler`, orjson accepts none of stdlib's keyword arguments, and dropping the handler would turn a currently successful insert of a `Decimal` into a hard failure. The read side has no such constraint.

With `ENABLE_ORJSON` unset, which is the default, `JSONCodec` is stdlib `json` and this call site behaves exactly as before.
---
 backend/open_webui/retrieval/vector/dbs/oracle23ai.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/backend/open_webui/retrieval/vector/dbs/oracle23ai.py b/backend/open_webui/retrieval/vector/dbs/oracle23ai.py
index b09eacb81d..bc3a5fbc8e 100644
--- a/backend/open_webui/retrieval/vector/dbs/oracle23ai.py
+++ b/backend/open_webui/retrieval/vector/dbs/oracle23ai.py
@@ -56,6 +56,7 @@ from open_webui.retrieval.vector.main import (
     VectorDBBase,
     VectorItem,
 )
+from open_webui.utils.json_codec import JSONCodec
 
 log = logging.getLogger(__name__)
 
@@ -390,7 +391,7 @@ class Oracle23aiClient(VectorDBBase):
         Returns:
             Dict: Metadata dictionary
         """
-        return json.loads(json_str) if json_str else {}
+        return JSONCodec.loads(json_str) if json_str else {}
 
     def insert(self, collection_name: str, items: List[VectorItem]) -> None:
         """