SQL Server performance of copied database -


i encountered problems sql server performance.

i have daily process using 15gb size database. i'm executing lot of scripts.

the thing is, first step copy original database, , work on copy. , surprising me, queries on copy executing few times slower on original one.

i'm not expert in databases, don't know might reason.

to compare:

query "a" took:

  • 50 seconds on original database
  • 600 seconds on copied database

thank interest, dejvid


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