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Logging and Log Administration
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Logical Log
In This Chapter
Logical Log
Logical-Log Files
Logical-Log Administration
Logical-Log Files on a Coserver
Logslices
Size of the Logical Log
Performance Considerations
Long-Transaction Considerations
Size and Number of Logical-Log Files
Size of the Logical Log
Number of Logical-Log Files
Location of Logical-Log Files
Identification of Logical-Logs
Status Flags of Logical-Log Files
Backup of Logical-Log Files
Logical-Log Restore
Point-In-Time Restore
Freeing of Logical-Log Files
Database Server Attempt to Free a Log File
Action If the Next Logical-Log File Is Not Free
Logical Log and Long Transactions
Configuring Dynamic Logical Logs
Factors That Influence the Rate at Which Logical-Log Files Fill
Factors That Prevent Closure of Transactions
Setting High-Water Marks
Logging Process
Dbspace Logging
Read Page into Shared-Memory Buffer Pool
Copy the Page Buffer to the Physical-Log Buffer
Read Data into Buffer and Create Logical-Log Record
Flush Physical-Log Buffer to the Physical Log
Flush Page Buffer
Flush Logical-Log Buffer
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