So I have a SharePoint 2010 farm. Last month I noticed it was getting unreasonably bigger, everything was working fine though. Then I noticed that Search_Service_Application_CrawlerStore..... database reached 200Gb. I tried shrinking it (simple recovery) but it doesn't seem to care. Any ideas?
You may try these steps below. These will empty your search index before repopulating it and one will also loose crawl history.
- Central Admin-> Search service admin -> Index Reset. This will erase all the content Index.
- DB Server->Choose the Crawl DB ->Shrink the Crawl DB files.
- Start a full crawl.
Reference Link explaining the steps