Database connection status error - Connection faulted

Getting an database connection status error, connection is faulted, and details show the following description - Cannot get a connection, pool error Unable to validate object
New user here, not able to understand what happened suddenly, It was working fine for last one week.

In your DB's connection settings in Ignition, there's one that specifies the "validation query" to use to verify that the DB connection is still functional (for recycling connections instead of closing them--that's the "pool"). Typically Select 1; or similar, but can vary by DB type. And can be disabled.

Your DB isn't running that query successfully when it is needed. You should investigate what changed in your DB.