You can refer to the following guide to get more details about the backup and restore:
{% inlineCalloutContainer %}
{% inlineCallout
color="violet-70"
icon="luggage"
bold="Backup Metadata"
href="/deployment/backup-restore-metadata" %}
Learn how to back up MySQL or Postgres data.
{% /inlineCallout %}
{% /inlineCalloutContainer %}
### Update `sort_buffer_size` (MySQL) or `work_mem` (Postgres)
Before running the migrations, it is important to update these parameters to ensure there are no runtime errors.
A safe value would be setting them to 20MB.
**If using MySQL**
You can update it via SQL (note that it will reset after the server restarts):
```sql
SET GLOBAL sort_buffer_size = 20971520
```
To make the configuration persistent, you'd need to navigate to your MySQL Server install directory and update the
`my.ini` or `my.cnf` [files](https://dev.mysql.com/doc/refman/8.0/en/option-files.html) with `sort_buffer_size = 20971520`.
If using RDS, you will need to update your instance's [Parameter Group](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithParamGroups.html)
to include the above change.
**If using Postgres**
You can update it via SQL (not that it will reset after the server restarts):
```sql
SET work_mem = '20MB';
```
To make the configuration persistent, you'll need to update the `postgresql.conf` [file](https://www.postgresql.org/docs/9.3/config-setting.html)
with `work_mem = 20MB`.
If using RDS, you will need to update your instance's [Parameter Group](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithParamGroups.html)
to include the above change.
Note that this value would depend on the size of your `query_entity` table. If you still see `Out of Sort Memory Error`s
during the migration after bumping this value, you can increase them further.
After the migration is finished, you can revert this changes.
With 1.6 Release we are moving the `View Lineage`&`Stored Procedure Lineage` computation from metadata workflow to lineage workflow.
This means that we are removing the `overrideViewLineage` property from the `DatabaseServiceMetadataPipeline` schema which will be moved to the `DatabaseServiceQueryLineagePipeline` schema.
Introducing the ["connector specifcication class (`ServiceSpec`)"](https://github.com/open-metadata/OpenMetadata/blob/main/ingestion/src/metadata/utils/service_spec/service_spec.py).
The `ServiceSpec` class serves as the entrypoint for the connector and holds the references for the classes that will be used
to ingest and process the metadata from the source.
You can see [postgres](https://github.com/open-metadata/OpenMetadata/blob/main/ingestion/src/metadata/ingestion/source/database/postgres/service_spec.py) for an
The filtering of Fivetran pipelines now supports using their names instead of IDs. This change may affect existing configurations that rely on pipeline IDs for filtering.
### DBT Cloud Pipeline Service
We are removing the field `jobId` which we required to ingest dbt metadata from a specific job, instead of this we added a new field called `jobIds` which will accept multiple job ids to ingest metadata from multiple jobs.
### MicroStrategy
The `serviceType` for MicroStrategy connector is renamed from `Mstr` to `MicroStrategy`.
