I am presenting available options to IT management for implementing a disaster recovery plan. I've been asked to document the pros and cons of an Oracle 8i standby server. Can you help?
The pros are:
- Easy setup
- Separate databases protect against Oracle errors
- It's free
- Lag time before the standby is updated could allow for recovery from user's error (if a user drops a table, you could get it back from the other instance).
The cons are:
- The lag time allows for the loss of database of the standby database (the standby database is only as good as the last log applied there)
- There is only one failover possible (you can't fail back)
- No transparent application failover (jobs/queries would have to be restarted on the standby database)
- Manual reconfiguration of the standby database for certain events
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