Progress Fathom Replication
User’s Guide

> ## After Image extents

> You cannot mark an AI extent as empty until Fathom Replication has finished processing it. `RFUTIL` can be used to mark an extent as empty,`` but it must consider the extent `FULL` first. You can use the `RFUTIL` `AIMAGE LIST` function to determine the state of your AI extent. This function returns one of the following four possible values:

> - `EMPTY` — The extent is empty.

> - `BUSY` — The extent is currently in use.

> - `LOCKED` — The extent is full, but it has not been replicated by Fathom Replication.

> - `FULL` — The extent is full and has been replicated in its entirety by Fathom Replication.

> If an AI extent has a `LOCKED` status, the `RFUTIL AIMAGE FULL` function will not consider the extent full, as it only considers AI extents that have been completely replicated as full.

> If an AI extent has a `FULL` status, an AI extent can be marked empty with the `RFUTIL AIMAGE EMPTY` function.

> Note: When you add new AI extents, they are added to the end of the extent list by default. However, you might need to place new empty extents after the current `BUSY` extent, since the next existing extent might be `LOCKED` and unwritable. You can use the `PROSTRUCT REORDER AI` command to reposition new extents in the extent list. For more information about reordering AI extents, see the Progress Database Administration Guide and Reference .

Copyright © 2004 Progress Software Corporation www.progress.com Voice: (781) 280-4000 Fax: (781) 280-4095