16.10 - REALLOCDUR - Teradata Database

Purpose

The REALLOCDUR command reallocates cylinders for a specified durable cylinder type. Durable cylinders are special cylinders used by the file system itself, such as cylinders used to store the master index (MI) and the file system trace buffer (FTR). Durable cylinders are not available to be allocated for general storage.

Use REALLOCDUR when durable cylinders have been lost, or cannot otherwise be repaired. This command allocates new durable cylinders for these structures. If cylinders which used to be part of the durable cylinder remain on the bad or quarantine lists, they should be freed by using the BADLIST /R or QUARLIST /R command, as appropriate. For more information on these commands, see BADLIST, and QUARLIST.

Syntax

cyltype

Specifies the type of durable cylinders to be allocated.

cyltype can be one of the following:

• MICYL


  Specifies that durable cylinders for the master index be reallocated.

• FTRCYL


  Specifies that durable cylinders for the trace buffers be reallocated.

Usage Notes

Use this command when there are multiple large durable cylinders in the quarantine list. For more information, see QUARLIST.

For more information on the proper use of this command to repair large file system structures, see Repairing Cylinders.