PX SEND (RANGE)

Description

Parallel execution - send range of rows to parent process

Versions

This operation is implemented in the following versions

Example

This example was developed using Oracle 10.2.0.1 on Linux

This example requires the following table definitions

    CREATE TABLE t1
    (
      c1 NUMBER,
      c2 NUMBER
    )
    PARALLEL 2;

The statement

    CREATE INDEX i1 ON t1 (c1) PARALLEL 2;

generates the following execution plan

0     CREATE INDEX STATEMENT 
1   0   PX COORDINATOR
2   1     PX SEND (QC (ORDER))
3   2       INDEX BUILD (NON UNIQUE)
4   3         SORT (CREATE INDEX)
5   4           PX RECEIVE
6   5             PX SEND (RANGE)
7   6               PX BLOCK ITERATOR 
8   7                 TABLE ACCESS (FULL) OF 'T1'