interMedia Text Index Rebuilds

Hi, I have a question regarding rebuilding intermedia text indexes. We are talking 8.1.7.2 on Solaris 2.6.

I know that text indexes will be added to as new documents are created, so long as you are running the ctxsrv process.

I believe that search performance gradually degrades and that periodic complete index rebuilds are recommended.

Am I right so far?

The problem I have is that no new documents can be added whilst the index rebuild is in progress. Is there an elegant way to achieve reindexing  whilst still being able to add documents?

Thanks all....

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jeremy