問題文
A listing of open transactions shows one of them waiting rather than running, and on the applying side a group is being restarted with the first transaction to be passed over. When does that waiting show, and where may that passing over be used?
選択肢
- While a transaction is being read after a forcing command was given, and on a trail that belongs to an online arrangement, one keeping checkpoints
- While a transaction is being read after a forcing command was given, and on any trail at all, whether or not the arrangement keeps checkpoints
- While a transaction is being written after a forcing command was given, and on a trail that belongs to an online arrangement, one keeping checkpoints
- While a transaction is being written after a forcing command was given, and on any trail at all, whether or not the arrangement keeps checkpoints