Yes,
There is an article on moving to CBO for 11i by
Ahmed Alomari where there is a discussion on the mentioned
parameters.
Also 3-4 of these undocumented parameters are infact documented in the
oracle documentation (which metalink has promptly dissociated itself with)
!!
Nevertheless if some of the gurus can explain what is that they try to
observe
while incorporating any of the undocumented parameters, it'll be quite
enlightening
to a lot of us.
TIA,
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: Wednesday, January 16, 2002 3:30 PM
Subject: Re: dynamic views in 8.1.6
: $)CYes.
:
: Look at the list of required init.ora settings to be applied after
: migrating/upgrading
: an Apps 10.7/11 database to 8.1.7 when upgrading to Apps 11i !
: [pasting from the Apps 11i Upgrade manual]
:
: Set init.ora file parameters
: In your init.ora file, set the following parameters to the values
: indicated. Restart
: your database for the new parameters to take effect.
: _complex_view_merging = true
: _fast_full_scan_enabled = false
: _like_with_bind_as_equality = true
: _new_initial_join_orders = true
: _optimizer_mode_force = true
: _optimizer_undo_changes = false
: _or_expand_nvl_predicate = true
: _ordered_nested_loop = true
: _push_join_predicate = true
: _push_join_union_view = true
: _sort_elimination_cost_ratio = 5
: _table_scan_cost_plus_one = true
: _trace_files_public = true
: _use_column_stats_for_function = true
: _sqlexec_progression_cost = 0
: aq_tm_processes = 1
: always_anti_join = NESTED_LOOPS
: always_semi_join = NESTED_LOOPS
: db_block_buffers = 5000
: db_files = 500
: db_file_multiblock_read_count = 8
: dml_locks = 500
: enqueue_resources = 5000
: log_buffer = 1048576
: log_checkpoint_interval = 100000
: log_checkpoint_timeout = 72000
: max_enabled_roles = 40
: nls_date_format = DD-MON-RR
: nls_language = american
: nls_numeric_characters = .,
: nls_sort = binary
: nls_territory = america
: open_cursors = 500
: optimizer_features_enable = 8.1.7
: optimizer_max_permutations = 2000
: optimizer_mode = rule
: optimizer_percent_parallel = 0
: parallel_min_servers = 0
: processes = 75
: query_rewrite_enabled = true
: row_locking = always
: shared_pool_reserved_size = 30000000
: shared_pool_size = 300000000
: sort_area_size = 256000
: timed_statistics = true
:
:
: Hemant K Chitale
: Principal DBA
: Chartered Semiconductor Manufacturing Ltd
:
:
: Mogens N)*rgaard <[EMAIL PROTECTED]> 16/01/2002 09:15 AM
: Sent by: [EMAIL PROTECTED]
:
: Please respond to ORACLE-L
:
: To: Multiple recipients of list ORACLE-L
<[EMAIL PROTECTED]>
: cc: (bcc: CHITALE Hemant Krishnarao/Prin DBA/CSM/ST Group)
: Subject: Re: dynamic views in 8.1.6
:
:
:
:
:
:
:
:
: _might_be_running_apps = true
:
: commit;
:
: Mogens
:
: Stephane Faroult wrote:
: Oracle DBA wrote:
: we have added these parameters in the init.ORA file .
: query_rewrite_enabled=true
: _complex_view_merging=true
: _push_join_predicate=true
: optimizer_max_permutations=79000
: _use_column_stats_for_function=true
: _like_with_bind_as_equality=true
: _push_join_union_view=true
: _ordered_nested_loop=true
: _or_expand_nvl_predicate=true
:
: after these changes all the dynamic views created by developers
: have stopped
: working .
:
: our database is running on aix 4.3.3 and its in MTS mode .
:
: Will appreciate quick response.
:
: thanks in advance .
:
: brajesh jaiswal
:
:
: _stop_messing_with_undocumented_parameters=TRUE
:
:
:
:
:
:
: --
: Please see the official ORACLE-L FAQ: http://www.orafaq.com
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: Author:
: INET: [EMAIL PROTECTED]
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