Hi @Nitish92,
growing in size is the normal behavior of a DB. In IIQ there are some options which can significantly increase the size of the DB and every IIQ creates some objects like TaskResult, ProvisioningTransaction, SysLog and IdentitySnapshot.
You can configure an expiration time for this objects on Global Configuration → IdentityIQ Configuration and those objects will be delete with Perform Maintenance task:
This help you to reduce the size of db. Another tools is the Shrink of DB, is an operation on DB side that compact the db. ALso, you can reduce the size of extended column until the effective util size; on this page you can find some recommendations.
I suggest you implement those operation incluse a maintance plan on DB but to resolve the problem you must increse the Autogrowth, the Maxsize(if it is configurated with a limit), the avaible space for the db on the server, ecc…