This issue may related to the database pool size and api worker size. For example, this issue can be reproduced by this configuration below(with the wsgi deployment): ``` [default] osapi_volume_workers = 6 [database] max_pool_size = 2
```
This issue may related to the database pool size and api worker size. For example, this issue can be reproduced by this configuration below(with the wsgi deployment): workers = 6
```
[default]
osapi_volume_
[database]
max_pool_size = 2
```