DEFRAGMENTER

So compress, repack, and shrink might be able to reduce the total number of extents for a partition, just like the defragmenter.

If the largest free extent cannot cover two or more partition extents, the defragmenter sets an error code and returns.

Free space at the end of the partition is considered as space that needs to be covered by the defragmenter.

The online defragmenter is a simple tool that copies files into a new ext4 inode that refers to contiguous extents.

Consider using the Disk Cleanup and Disk Defragmenter options on the System Tools menu of your operating system.

The defragmenter will not automatically start up again if a defragmentation operation was in progress at the time of crash.

The defragmenter does not take an exclusive lock while doing the defrag operation, hence the partition is available for other operations.

Defragmenter transactions are short; there is no possibility of a long transaction occurring.

The defragmenter then checks to see if defragmentation is necessary.

In the Disk Defragmenter dialog box, click the drives that you want to defragment and then click the Analyze disk button.

This version of Disk Defragmenter does not support running more than one instance.

The Disk Defragmenter is not installed on your computer.

Disk Defragmenter cannot create a required resource. Please reinstall Disk Defragmenter.

A crash while the defragmenter is running results in only the last transaction being aborted.

Consider using the Disk Cleanup and Disk Defragmenter options on the System Tools menu.

Disk Defragmenter could not create a required resource. Please reinstall Disk Defragmenter.

Data needed from the registry was not found. Please reinstall Disk Defragmenter.

Command line operation of Disk Defragmenter is not supported .

The connection to the defragmenter engine has been lost . Restart defragmentation .

This command must be run while the defragmenter is active on a partition to show the defragment operation in progress.

The defragmenter may not be run on the partition partition, secondary server, or a temporary table.

Conflicting operations result in the defragmenter returning an error code.

Disk Defragmenter cannot run in a Terminal Server session.

The defragmenter may be invoked using the execute function syntax in the dbadmin database or through the OAT interface.

Disk Defragmenter cannot run on this volume type.

Checkpoints are not blocked by the defragmenter.

In this case, the result will be a single extent. Adding a chunk to the dbspace before running the defragmenter can help assure this.

The defragmenter is one component of this tool set that is particularly useful for partitions residing in heavily updated dbspaces.

To avoid this degradation in performance, you should run Disk Defragmenter weekly or biweekly.

Extents added while the defragmenter is running will not be eliminated.

Disk Defragmenter could not initialize .

To close the Disk Defragmenter utility, on the title bar of the window, click the Close button.

Disk Defragmenter is already running.

Archives, reads, and updates can be run in parallel with the 11. 70 defragmenter.

Click Analyze to start the Disk Defragmenter.

Certain special operations on a partition conflict with the 11. 70 defragmenter.

If this is undesirable, then run shrink before running the defragmenter on a partition.

If buffer pool usage is a concern, then running the defragmenter at a non-peak time is recommended.

Disk Defragmenter could not start.

To close the Disk Defragmenter utility, click the Close button on the title bar of the window. 6.

Why is the defragmenter needed?

How does the defragmenter work?

The defragmenter uses the buffer pool for this movement in order to keep the data in sync with other uses.

With the 11. 70 defragmenter, extents are merged while the partition is being read and updated, and full crash recovery is provided.

How does the 11. 70 defragmenter differ from compress, repack, and shrink?

If a table is used heavily and is frequently updated, then you should consider periodically running the defragmenter on it.

Do you want to run Disk Defragmenter now anyway?

Disk Defragmenter needs a min of 15% of free space on the hard drive in order to defrag.

Disk Defragmenter cannot defragment this read-only volume

Error message "Disk defragmenter could not initialize" when you defragment a NTFS drive on a Windows 2000 computer