12CR2 vs 11gR2 新增optimizer 参数列表

_optimizer_adaptive_plan_control 0
_optimizer_adaptive_plans_continuous FALSE
_optimizer_adaptive_plans_iterative FALSE
_optimizer_adaptive_random_seed 0
_optimizer_ads_for_pq FALSE
_optimizer_ads_result_cache_life 3600
_optimizer_ads_spd_cache_owner_limit 64
_optimizer_ads_use_partial_results TRUE
_optimizer_ads_use_spd_cache TRUE
_optimizer_aggr_groupby_elim TRUE
_optimizer_ansi_join_lateral_enhance TRUE
_optimizer_ansi_rearchitecture TRUE
_optimizer_band_join_aware TRUE
_optimizer_batch_table_access_by_rowid TRUE
_optimizer_bushy_cost_factor 100
_optimizer_bushy_fact_dim_ratio 20
_optimizer_bushy_fact_min_size 100000
_optimizer_bushy_join off
_optimizer_cbqt_or_expansion ON
_optimizer_cluster_by_rowid TRUE
_optimizer_cluster_by_rowid_batch_size 100
_optimizer_cluster_by_rowid_batched TRUE
_optimizer_cluster_by_rowid_control 129
_optimizer_control_shard_qry_processing 65534
_optimizer_cube_join_enabled TRUE
_optimizer_db_blocks_buffers 0
_optimizer_dsdir_usage_control 0
_optimizer_eliminate_subquery TRUE
_optimizer_enable_plsql_stats TRUE
_optimizer_enhanced_join_elimination TRUE
_optimizer_gather_feedback TRUE
_optimizer_gather_stats_on_load TRUE
_optimizer_generate_ptf_implied_preds TRUE
_optimizer_generate_transitive_pred TRUE
_optimizer_hll_entry 4096
_optimizer_hybrid_fpwj_enabled TRUE
_optimizer_inmemory_access_path TRUE
_optimizer_inmemory_autodop TRUE
_optimizer_inmemory_bloom_filter TRUE
_optimizer_inmemory_capture_stored_stats TRUE
_optimizer_inmemory_cluster_aware_dop TRUE
_optimizer_inmemory_gen_pushable_preds TRUE
_optimizer_inmemory_minmax_pruning TRUE
_optimizer_inmemory_pruning_ratio_rows 100
_optimizer_inmemory_quotient 0
_optimizer_inmemory_table_expansion TRUE
_optimizer_inmemory_use_stored_stats AUTO
_optimizer_interleave_or_expansion TRUE
_optimizer_key_vector_aggr_factor 75
_optimizer_key_vector_pruning_enabled TRUE
_optimizer_multi_table_outerjoin TRUE
_optimizer_multicol_join_elimination TRUE
_optimizer_nlj_hj_adaptive_join TRUE
_optimizer_null_accepting_semijoin TRUE
_optimizer_partial_join_eval TRUE
_optimizer_performance_feedback OFF
_optimizer_proc_rate_level BASIC
_optimizer_proc_rate_source DEFAULT
_optimizer_reduce_groupby_key TRUE
_optimizer_strans_adaptive_pruning TRUE
_optimizer_synopsis_min_size 2
_optimizer_undo_cost_change 12.2.0.1
_optimizer_union_all_gsets TRUE
_optimizer_unnest_scalar_sq TRUE
_optimizer_use_feedback_for_join FALSE
_optimizer_use_gtt_session_stats TRUE
_optimizer_use_histograms TRUE
_optimizer_use_table_scanrate HADOOP_ONLY
_optimizer_use_xt_rowid TRUE
_optimizer_vector_base_dim_fact_factor 200
_optimizer_vector_cost_adj 100
_optimizer_vector_fact_dim_ratio 10
_optimizer_vector_min_fact_rows 10000000
_optimizer_vector_transformation TRUE
optimizer_adaptive_plans TRUE
optimizer_adaptive_reporting_only FALSE
optimizer_adaptive_statistics FALSE
optimizer_features_enable 12.2.0.1
optimizer_inmemory_aware TRUE

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