DBaaS limits

Plan a DBaaS instance around these limits: how far it grows, how many Read Replicas and VPCs it takes, and which names and passwords it accepts. The connection and statement limits apply to MySQL 8.0, MariaDB 10.6 and 10.11, and PostgreSQL 15 and 18. A parameter group changes the connection limit; see Common parameter group settings.

Size and count

What	Limit	Where you meet it
Regions	Delhi and Chennai	Create a DBaaS instance
Read Replicas	Up to four per DBaaS instance	Create a Read Replica
VPCs	Up to three per DBaaS instance	Attach a VPC to a DBaaS instance
Disk	Added in 250 GB steps, up to 4,000 GB in total; each step is permanent	Expand a DBaaS instance’s disk space
Plan	Moves to a plan with the same or more vCPUs and disk, on the same engine version	Upgrade a DBaaS instance’s plan
Connections (MySQL and MariaDB)	151 at once on the DBS.16GB plan (16 GB RAM, 4 vCPU); other plans can differ	-
Connections (PostgreSQL)	100 at once on the DBS.16GB plan (16 GB RAM, 4 vCPU), 97 of them for your users; other plans can differ	-
Statement size (MySQL and MariaDB)	Up to 64 MB for a single statement or row	Import a database into a DBaaS instance
Prepaid credit	Enough infra credits to run the new DBaaS instance for about 24 hours	Create a DBaaS instance

Names and passwords

What	Rule
Instance Name	1 to 50 characters: letters, numbers, hyphens, and underscores
Database Name	Up to 64 characters; postgres is reserved on PostgreSQL, and mysql on MySQL and MariaDB
Username	Lowercase letters and numbers, up to 80 characters; admin by default
Password at creation	16 to 30 characters, with a digit, an uppercase letter, a lowercase letter, and a special character
Password at reset	16 to 30 characters that start and end with a letter, with letters, numbers, and ! # _ $ & * ? @ in between
Encryption passphrase	8 to 12 characters, with an uppercase letter, a lowercase letter, and a special character
Master Node Name	Up to 50 characters: letters, numbers, underscores, and hyphens
Parameter group	A name and a description of up to 50 characters each

Snapshots, alerts, and logs

What	Limit
Snapshot windows	12 AM to 1 AM, 8 AM to 9 AM, or 6 PM to 7 PM, India Standard Time (IST)
Lifecycle rule	1 day, 3 days, 7 days, 15 days, 1 month, 3 month, 6 month, or 1 year
Failed scheduled snapshot	DBaaS retries it up to five times, and emails you if it still fails
Alert threshold	Threshold value (%): a number from 10 to 100, for every trigger
Slow query log	Lists queries that ran longer than two seconds