Caché High Availability Guide - InterSystems Documentation

Error Conditions1.3.2 Sample Recovery Errors1.3.2.1 Error Opening CACHE.DATIf you cannot open a cache.dat or cache.ext file that needs to be restored, you see this messageduring the write phase:Can't open file: /usr/cache/cache.datIts blocks weren't writtenRecovery continues trying to write blocks to all other directories to be restored. If this happens,do the following:1. Do not delete the write image journal.2. Try to correct the problem with the Caché database on which the error occurred.3. Restart and let recovery try again.Directories that were restored the first time are not listed as having blocks to be writtenduring this second recovery attempt.1.3.2.2 Error Writing to Caché BlockIf recovery starts to write to a Caché database file, but cannot write a particular block number,you see this message:Error writing block number xxxxIf this error occurs four times in a single restoration, the restoration aborts, and you see thismessage:Error writing block number xxxxDo you want to delete the Write Image File (Y/N)? Y =>Enter N to retain the write image journal. Recovery attempts to continue. If it still does notsucceed and you receive this message again, call InterSystems Technical Support. If youmust continue immediately, you can delete or rename the write image journal. If you deleteit, you lose all changes recorded in it.1.3.2.3 Error Reading Write Image JournalIf an error occurs when recovery attempts to read the write image journal file, you see thismessage:Caché High Availability Guide 9