Progress Fathom Replication
User’s Guide

> ## Database connection considerations

> As Fathom Replication is started, all database connections are disallowed until Fathom Replication startup and initialization phases are complete, unless you use the `defer-agent-startup` property in the server properties file. Disallowing database connections has different results based upon the type of client connecting. Client connections in this section are defined to be user sessions or utilities that perform actions on the database.

> Table 2–1 shows the results of connecting during startup and initialization based on the type of client connecting.

> Table 2–1: Connection results during startup and initialization
> Type of client | Connection results
> --- | ---
> Self Serve Client | Blocks until database connections are allowed.
> Remote Client | Ends in an error stating that the broker cannot spawn the server. A message is sent to the database log.
> Progress Utility | Blocks until database connections are allowed.
> Forced Shutdown | Always allowed.
> Java ODBC Client (SQL Server access) | Ends in an error stating a network daemon error.
> AppServer Self Serve Client | Blocks until database connections are allowed.
> AppServer Remote Client | Ends in an error stating that the broker cannot spawn the server. A message is sent to the database log.
> WebSpeed Self Serve Client | Blocks until database connections are allowed.
> WebSpeed Remote Client | Ends in an error stating that the broker cannot spawn the server. A message is sent to the database log.

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