The following are the parameters are introduced newly in 12c. (Note I have compared them with 11.2.0.1 Database)
Excluded _Parameters
select KSPPINM, KSPPDESC from x$ksppi where con_id=1 minus select KSPPINM, KSPPDESC from t2@Geek DBA11g order by 1,2 awr_snapshot_time_offset Setting for AWR Snapshot Time Offset cell_offloadgroup_name Set the offload group name clonedb clone database connection_brokers connection brokers specification cursor_bind_capture_destination Allowed destination for captured bind variables db_big_table_cache_percent_target Big table cache target size in percentage db_index_compression_inheritance options for table or tablespace level compression inheritance db_unrecoverable_scn_tracking Track nologging SCN in controlfile dnfs_batch_size Max number of dNFS asynch I/O requests queued per session enable_pluggable_database Enable Pluggable Database heat_map ILM Heatmap Tracking max_string_size controls maximum size of VARCHAR2, NVARCHAR2, and RAW types in SQL nls_timestamp_tz_format timestamp with timezone format noncdb_compatible Non-CDB Compatible optimizer_adaptive_features controls adaptive features optimizer_adaptive_reporting_only use reporting-only mode for adaptive optimizations parallel_degree_level adjust the computed degree in percentage parallel_degree_policy policy used to compute the degree of parallelism (MANUAL/LIMITED/AUTO/ADAPTIVE) parallel_fault_tolerance_enabled enables or disables fault-tolerance for parallel statement pdb_file_name_convert PDB file name convert patterns and strings for create cdb/pdb pga_aggregate_limit limit of aggregate PGA memory consumed by the instance processor_group_name Name of the processor group that this instance should run in. spatial_vector_acceleration enable spatial vector acceleration temp_undo_enabled is temporary undo enabled threaded_execution Threaded Execution Mode unified_audit_sga_queue_size Size of Unified audit SGA Queue use_dedicated_broker Use dedicated connection broker use_large_pages Use large pages if available (TRUE/FALSE/ONLY)
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