drop chunk argument: Drop a chunk (SQL administration API)

Use the drop chunk argument with the admin() or task() function to drop the specified chunk from a dbspace, blobspace, or sbspace.

Syntax


1  EXECUTE FUNCTION
1 admin
1 task
2  ( "drop chunk"
2  , "space_name"?  , "path_name"  ,? "offset"
2  ) ;
Element Description Key Considerations
offset The offset, in kilobytes, into the disk partition or into the unbuffered device to reach the initial chunk of the dbspace, blobspace, or sbspace that you are dropping. The starting offset, an unsigned integer, must be equal to or greater than 0. The starting offset plus the chunk size cannot exceed the maximum chunk size, which is 8 EB.

Also see admin() and task() Argument Size Specifications.
path_name The disk partition or unbuffered device of the initial chunk of the dbspace, blobspace, or sbspace that you are dropping. The chunk must be an existing unbuffered device or buffered file. When you specify a path name, you can use either a full path name or a relative path name. However, if you use a relative path name, it must be relative to the directory that was the current directory when you initialized the database server.
space_name The name of the dbspace, sbspace, or blobspace from which to drop a chunk. You can drop a chunk from a dbspace, temporary dbspace, or sbspace when the database server is online or quiescent.

You can drop a chunk from a blobspace only when the database server is in quiescent mode.

Usage

This function is equivalent to the onspaces -d command.

Example

The following example drops a chunk at an offset of 5200 kilobytes from a dbspace named dbspc3:
EXECUTE FUNCTION task("drop chunk", "dbspc3","\\.\e:","5200");