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How do I improve the performance of my app? **You are experiencing performance issues with one of the components of your app.** *For example*: Response time is very high, Dyno memory usage issues, Availability issues, Metric Visibility
Syncing Heroku Postgres data to Salesforce via Heroku Connect is slow Your connection has a high number pending writes to be synced to Salesforce via Heroku Connect and sync is processing very slowly.
Heroku Connect state remains SCHEMA_CHANGED and the sync operations is disabled after adding a new field After adding a new field on a mapping object, it appears that this error happens continuously. How can I resolve this? ``` ERROR Too many sync errors. Sync operations may be disabled for up to 15 minute(s). INFO Error during sync: (psycopg2.ProgrammingError) column "xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy" of relation "zzz" already exists... INFO Adding column xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy_xxxxx_yyyyy__c to table "salesforce"."zzz" ```
Does Heroku Connect support Person Accounts? I've enabled [Person Accounts](https://help.salesforce.com/articleView?id=account_person.htm) in Salesforce and would like to use Connect to sync only Person Accounts, rather than all Accounts. Is that possible?
Why did sync stop after a Salesforce Sandbox Refresh? **This KB is intended for Sandbox orgs that have been refreshed and caused sync to stop. For production orgs in INACTIVE_ORG, please open a ticket.** Your Salesforce Sandbox Organization has been refreshed and sync activity has stopped. Your dashboard states that your Salesforce org has become inactive. When a sandbox organization is refreshed, Salesforce essentially gives you a new organization, making the old one inactive. This breaks the connection between your Salesforce database and your Heroku Postgres database. It's different from a production instance refresh because your record's SFIDs change, which can cause consequences not only for Heroku Connect's synchronization but for your data.
How Heroku syncs time? I'd like to know how Heroku syncs time.
What is an acceptable amount of Dyno load? Dashboard Metrics displays Dyno Load, measured as "1m Load Average" and "1m Load Max". The method of taking these measurements is explained on our Dev Center (https://devcenter.heroku.com/articles/metrics#dyno-load), but this does not illustrate what you should expect my application to run at.
How do I switch the dyno hosts for apps in Common Runtime and Private Spaces? I'm seeing poor response times/performance issues with a single dyno.
Why weren’t changes to my Heroku Connect mapping configuration saved successfully? The mapping configuration doesn't update when you add or remove a field, or make some other change to your mapping.
Why doesn't Heroku Connect automatically update Postgres schema when changes are made in Salesforce? You have edited a Field or Object definition in Salesforce and are now getting errors in Heroku Connect that indicate that your Mapping is out-of-date. You would like to have the changes made in Salesforce be reflected automatically in your database.

Dev Center articles 3

Heroku Connect Heroku Connect is an add-on that provides a data synchronization service between Salesforce and Heroku Postgres databases.
Diagnosing Heroku Connect Performance Issues A number of factors can affect sync performance with Heroku Connect. Follow the steps in this article to diagnose perceived read or write performance issues.
Optimizing Heroku Connect Performance Sync performance varies widely from one connection to another. This article shows how to optimize Heroku Connect sync speed. To improve the performance of your Connect instance, follow these tips for Heroku Connect, Heroku Postgres, and Salesforce.

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