Print Manager intermittently fails with 'No PDF report returned from Crystal Web Service' under load, right after applying an Apps 10 update — the Crystal Web Service log shows 'The web instance is busy, request will be forwarded to the next available instance.' Is this just a capacity issue needing more CWS instances?

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Answer

Before assuming it's purely a capacity problem, check that update's Installation Notes for a required post-install step — some Apps 10 updates specifically require reinstalling Print Agent and Crystal Web Service as part of their documented post-install steps, and skipping that reinstall after an update has been linked to exactly this kind of intermittent 'busy instance' failure under load that wasn't present before the update. Confirm the reinstall requirement for your specific update before adding more CWS instances as the fix.

Documentation-based answer. Confirm the product and release before applying it. This answer has not been verified in an IFS environment.

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