A checkpoint guarantees that data pages changed by completed transactions are regularly written from the cache in memory to the database device. Each time you issue a checkpoint, Adaptive Server:
Freezes all current data modification transactions.
Writes pages to the database device that have been modified in memory (but not on disk) since the last checkpoint.
Writes a checkpoint to the transaction log.
Unfreezes the current transactions.
To checkpoint a database:
Right-click a database or select File.
From the list of options, select Checkpoint.
Sybase Central displays the Confirm Checkpoint dialog box. Select Yes to checkpoint the database or No to exit. Select the Preview button to preview the SQL text used to perform the checkpoint.
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