Tag: Memory
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Troubleshoot RESOURCE_SEMAPHORE Waits in SQL Server (Memory Grant Pressure)
RESOURCE_SEMAPHORE means a query is waiting for a workspace memory grant, memory SQL Server reserves up front for sorts, hashes, and other operators before the query is allowed to run at all, and there isn’t enough available right now. Unlike most waits, this one can genuinely hang a session for minutes with nothing else visibly…
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