Quotas and limits

This document lists the quotas and limits for Data Catalog.

A quotarestricts how much of a particular shared Google Cloud resource your Google Cloud project can use, including hardware, software, and network components. Quotas are part of a system that does the following:

• Monitors your use or consumption of Google Cloud products and services.
• Restricts your consumption of those resources for reasons including ensuring fairness and reducing spikes in usage.
• Maintains configurations that automatically enforce prescribed restrictions.
• Provides a means to make or request changes to the quota.

When a quota is exceeded, in most cases, the system immediately blocks access to the relevant Google resource, and the task that you're trying to perform fails. In most cases, quotas apply to each Google Cloud project and are shared across all applications and IP addresses that use that Google Cloud project.

To increase or decrease select quotas, use the Google Cloud console. For more information, see Request a quota adjustment .

There are also limitson resources. These limits are unrelated to the quota system. Limits cannot be changed unless otherwise stated.

By default, quotas and limits apply on a per-project basis.

For more information about data lineage quotas, see Quotas for Data Lineage API requests .

Quotas

To calculate an organization's QPM (queries per minute), Data Catalog adds together the QPM of projects in the organization.

Data Catalog uses QPM quotas to prevent service overload rather than control request workload distribution among projects. Therefore, both project and organization have the same default QPM quotas. In other words, if an organization has multiple projects and the request workload of one of them approaches the default organization (and the same project) quota, this project might impact the potential workload of the other projects in the organization.

To adjust organization and project quotas separately, see Request a quota adjustment .

QPM quota	Default value
Read	6000
Write	1500
Search	1200

For more information about BigQuery quotas, see BigQuery quotas & limits .

Limits

The Data Catalog API enforces limits for entries, tags, and business metadata.

Entry limits

Limit	Value
Maximum number of entry groups per organization across all locations	10k
Maximum number of entries per organization across all locations (search results latency can increase when exceeded)	100M
Maximum number of entries per entry group	100k
MB per entry	10 MB
Maximum number of search results per page	1000

Tag limits

Business metadata limits

Limit	Value
Maximum number of data stewards per data entry	15
Maximum size of rich text in overview, excluding image sizes	100 KB
Total size of rich text including images	10 MB