Oracle隐藏参数优化

针对以下参数进行优化调整

NAME	ISDEFAULT	NAME	ISDEFAULT
audit_trail	FALSE	sga_max_size	FALSE
cluster_database	TRUE	sga_target	FALSE
compatible	FALSE	undo_retention	FALSE
control_file_record_keep_time	FALSE	_b_tree_bitmap_plans	FALSE
cpu_count	TRUE	_cleanup_rollback_entries	FALSE
db_files	FALSE	_clusterwide_global_transactions	FALSE
deferred_segment_creation	FALSE	_datafile_write_errors_crash_instance	FALSE
enable_ddl_logging	FALSE	_gc_undo_affinity	FALSE
open_cursors	FALSE	_index_partition_large_extents	FALSE
optimizer_features_enable	TRUE	_memory_imm_mode_without_autosga	FALSE
parallel_force_local	FALSE	_optimizer_adaptive_cursor_sharing	FALSE
parallel_max_servers	FALSE	_optimizer_extended_cursor_sharing	FALSE
pga_aggregate_target	FALSE	_optimizer_extended_cursor_sharing_rel	FALSE
processes	FALSE	_optimizer_null_aware_antijoin	FALSE
resource_limit	FALSE	_optimizer_use_feedback	FALSE