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Close All Transactions and Shut Down the Source Database Server

Communicate to client users how long you expect the database server to be offline for the migration. Terminate all database server processes and shut down your source database server. This lets users exit and shuts down the database server gracefully. If necessary, you can perform an immediate shutdown of the database server, which does not let users save their work.

Before you convert from the original source database server, make sure that no open transactions exist. Otherwise, fast recovery will fail when rolling back open transactions during the conversion.

To let users exit and shut down the database server gracefully
  1. Execute the onmode –sy command to put the database server in quiescent mode.
  2. Wait for all users to exit.
  3. Execute the onmode –l command to move to the next logical log.
  4. Execute the onmode -c to force a checkpoint.
  5. Make a level-0 backup of the database server.
  6. Run ontape -a after the level-0 backup is complete.
  7. Execute the onmode –yuk command to shut down the system.
To perform an immediate shutdown of the database server 
onmode -l
onmode -c
onmode -ky
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