What Is Row Migration?

1.	What Is Row Migration?
Answer» Whenever a row length increases, as a result of an update and the current block is unable to PROVIDE ADDITIONAL space, the row has to be moved to another block with sufficient space. In such situations, the original location of the row holds the ROWID of the NEW location. Whenever a row length increases, as a result of an update and the current block is unable to provide additional space, the row has to be moved to another block with sufficient space. In such situations, the original location of the row holds the rowid of the new location.

Answer»

Whenever a row length increases, as a result of an update and the current block is unable to PROVIDE ADDITIONAL space, the row has to be moved to another block with sufficient space. In such situations, the original location of the row holds the ROWID of the NEW location.

Whenever a row length increases, as a result of an update and the current block is unable to provide additional space, the row has to be moved to another block with sufficient space. In such situations, the original location of the row holds the rowid of the new location.

Discussion

No Comment Found

Related InterviewSolutions

Can You Import Objects From Oracle Version 7.3 To 9i?
Suppose A Column Has Many Repeated Values. Which Type Of Index You Should Create On This Column?
If A Table Has Few Rows, Should You Create Indexes On This Table?
How Do You Capture An Exception In Oracle?
What Is Recursive Sql?
What Are Different Types Of Cursors?
Can You Pivot The Results Of A Query?
What Is Null?
What Is Execute Immediate?
What Is A Database Link? What Is The Difference Between A Public And A Private Database Link? What Is A Fixed User Database Link?