# Unable to save the Vector db of Crewai Docling Knowledge

**URL:** <https://community.crewai.com/t/unable-to-save-the-vector-db-of-crewai-docling-knowledge/5292>\
**Category:** CrewAI Community Support\
**Tags:** agent, crewai\
**Created:** [April 12, 2025, 5:18pm UTC](https://community.crewai.com/t/unable-to-save-the-vector-db-of-crewai-docling-knowledge/5292 "2025-04-12T17:18:36Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![komal\_gupta](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/komal_gupta/32/3274_2.png) [@komal\_gupta](https://community.crewai.com/u/komal_gupta)\
**Post date:** [April 12, 2025, 5:18pm UTC](https://community.crewai.com/t/unable-to-save-the-vector-db-of-crewai-docling-knowledge/5292/1 "2025-04-12T17:18:36Z")

</div>

Hi,

I am working on enabling Docling Knowledge source in crewai.  
Crew ai version - 0.108.0  
docling==2.29.0  
content\_source = CrewDoclingSource(  
file\_paths=[“Browser Related.docx”],  
collection\_name=“sourcedocling”,  
storage=KnowledgeStorage(collection\_name=“sourcedocling”)  
# storage=“./storage”

)

It is Working fine but , I am not able to correctly use the Storage parameter. I want my Docling vector db to be save in my directory so that my crewai and my agent can access it later on.

But no luck yet have tried different ways I have declare `CREWAI_STORAGE_DIR="./storage_DB"` in my .env file also.

---

<div class="post-metadata">

**Author:** ![maxmoura](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/maxmoura/32/4206_2.png) [@maxmoura](https://community.crewai.com/u/maxmoura)\
**Post date:** [April 12, 2025, 10:17pm UTC](https://community.crewai.com/t/unable-to-save-the-vector-db-of-crewai-docling-knowledge/5292/2 "2025-04-12T22:17:46Z")

</div>

In fact, you can pass an instance of `KnowledgeStorage` as a custom storage configuration, just like you did.

I took a look at the definition of `KnowledgeStorage` ([`crewai/knowledge/storage/knowledge_storage.py`](https://github.com/crewAIInc/crewAI/blob/main/src/crewai/knowledge/storage/knowledge_storage.py)):

```python
class KnowledgeStorage(BaseKnowledgeStorage):
    """
    Extends Storage to handle embeddings for memory entries, improving
    search efficiency.
    """

    collection: Optional[chromadb.Collection] = None
    collection_name: Optional[str] = "knowledge"
    app: Optional[ClientAPI] = None

    def __init__ (
        self,
        embedder: Optional[Dict[str, Any]] = None,
        collection_name: Optional[str] = None,
    ):
        self.collection_name = collection_name
        self._set_embedder_config(embedder)

    # [...]

    def initialize_knowledge_storage(self):
        base_path = os.path.join(db_storage_path(), "knowledge")
        chroma_client = chromadb.PersistentClient(
            path=base_path,
            settings=Settings(allow_reset=True),
        )

        self.app = chroma_client

        try:
            collection_name = (
                f"knowledge_{self.collection_name}"
                if self.collection_name
                else "knowledge"
            )
            if self.app:
                self.collection = self.app.get_or_create_collection(
                    name=sanitize_collection_name(collection_name),
                    embedding_function=self.embedder,
                )
            else:
                raise Exception("Vector Database Client not initialized")
        except Exception:
            raise Exception("Failed to create or get collection")

```

Maybe I’m missing something, but it looks like `base_path` is hardcoded. You can actually see where your vector database will be stored with:

```python
from pathlib import Path
from crewai.utilities.paths import db_storage_path

base_knowledge_db_path = Path(db_storage_path()) / "knowledge"

print(base_knowledge_db_path)

```

Anyway, your `Crew` and `Agent`s will automatically handle queries to your vector database for you.

---

<div class="post-metadata">

**Author:** ![komal\_gupta](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/komal_gupta/32/3274_2.png) [@komal\_gupta](https://community.crewai.com/u/komal_gupta)\
**Post date:** [April 13, 2025, 4:37am UTC](https://community.crewai.com/t/unable-to-save-the-vector-db-of-crewai-docling-knowledge/5292/3 "2025-04-13T04:37:47Z")

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Yes ,I have also gone through this module but didn’t get any luck on base path also it is noy getting saved anywhere. I am not sure I am intializing the KnowledgeStorage instance correctly. Or their is some issue in module which is not correctly calling Save and initialize\_knowledge\_storage(self) function.

As CrewDoclingSource also has a save function with save\_documents() but nowhere vector db is saved.

Yes Crew and Agent by default handle it correctly but in that case for every call the processing of the document will be done again that will give a latency that I don’t think so is correct.

Additionally do you have idea how collection name works and how I can use it if I have to make 3 different Vector Db to pass it to 3 different agents.

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<div class="post-metadata">

**Author:** ![maxmoura](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/maxmoura/32/4206_2.png) [@maxmoura](https://community.crewai.com/u/maxmoura)\
**Post date:** [April 13, 2025, 10:50am UTC](https://community.crewai.com/t/unable-to-save-the-vector-db-of-crewai-docling-knowledge/5292/4 "2025-04-13T10:50:21Z")

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**Update:**

> [@maxmoura](#):
>
> Maybe I’m missing something

Yep, turns out I _was_ missing something: `db_storage_path()` itself relies on `get_project_directory_name()`, which ultimately respects **the `CREWAI_STORAGE_DIR` environment variable**. So you absolutely can control where your vector database gets saved, just as you need. For example:

```python
from pathlib import Path
from crewai.utilities.paths import db_storage_path
import os

os.environ["CREWAI_STORAGE_DIR"] = str(Path.cwd()) # Set to current working directory

base_knowledge_db_path = Path(db_storage_path()) / "knowledge"

print(base_knowledge_db_path)

```

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex025/uploads/crewai/original/1X/ecda97e72f77c7100e0a761444b1c991925cc789.png) [@system](https://community.crewai.com/u/system)\
**Post date:** [August 28, 2025, 10:59pm UTC](https://community.crewai.com/t/unable-to-save-the-vector-db-of-crewai-docling-knowledge/5292/5 "2025-08-28T22:59:16Z")

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