Best way to rebuild all the indexes in a schema

Question

Hi,
DB : 9.2.0.7 (TEST Instance)
OS : HP-UX Itanium 11.23
we have TEST schema which contains 1960 Tables and 1800 Indexes.
we have requirement to rebuild all those indexes.
what is the best way to do this task?
Note: This TEST schema was created and imported with PROD schema of Production ( Schema wise import)

Answer 1

Sybrand has a very valid point, rebuild for what purpose? If it is performance you are likely wasting most of your effort thought there are cases where an index rebuild will help performance of specific queries though sometimes what you gain on a select may be paid for on an insert due to the rebuild resulting in splitting being required to support the insert.
If the hope is for performance before rebuilding the indexes update the statistics.
If you must rebuild the easiest way to to generate alter index owner.index_name rebuild commands via SQL and spool these to a file perhaps on a per tablespace basis. The you check the amount of space available in the tablespace to see if if will support rebuilding in place. If yes, great, just add a few commands to the script to echo the commands, show the timing, spool the results, etc.... If not, then you need to generate drop and re-create DDL for those indexes that cannot be rebuilt in an attempt to create the space necessary for the remaining indexes to use rebuilds.
HTH -- Mark D Powell --