今天上午准备在11gR2 测试环境上研究TDE，发现asm和db实例无法启动，如下：
[ora11g@11gr2test ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.DATA1.dg ora....up.type ONLINE OFFLINE
ora....ER.lsnr ora....er.type ONLINE ONLINE 11gr2test
ora.asm ora.asm.type ONLINE ONLINE 11gr2test
ora.cssd ora.cssd.type ONLINE ONLINE 11gr2test
ora.diskmon ora....on.type ONLINE ONLINE 11gr2test
ora.evmd ora.evm.type ONLINE ONLINE 11gr2test
ora.ons ora.ons.type OFFLINE OFFLINE
ora.roger.db ora....se.type ONLINE OFFLINE
查看日志，发现如下内容：
2011-10-09 19:59:24.746: [ora.LISTENER.lsnr][3022314384] {0:0:2} [check] LsnrAgent::check }
2011-10-09 19:59:29.432: [ AGFW][3018111888] {0:0:92} Agent received the message: RESOURCE_START[ora.DATA1.dg 11gr2test 1] ID 4098:344
2011-10-09 19:59:29.432: [ AGFW][3018111888] {0:0:92} Preparing START command for: ora.DATA1.dg 11gr2test 1
2011-10-09 19:59:29.433: [ AGFW][3018111888] {0:0:92} ora.DATA1.dg 11gr2test 1 state changed from: OFFLINE to: STARTING
2011-10-09 19:59:29.437: [ora.DATA1.dg][3022314384] {0:0:92} [start] clsn_agent::start {
2011-10-09 19:59:29.438: [ora.DATA1.dg][3022314384] {0:0:92} [start] DgpAgent::start: enter {
2011-10-09 19:59:29.438: [ USRTHRD][3022314384] {0:0:92} ConnectionPool::~ConnectionPool m_oracleHome:/home/ora11g/11.2/grid, m_oracleSid:+ASM, m_usrOraEnv:
2011-10-09 19:59:29.438: [ora.DATA1.dg][3022314384] {0:0:92} [start] DgpAgent::getConnxn new pool
2011-10-09 19:59:29.438: [ora.DATA1.dg][3022314384] {0:0:92} [start] DgpAgent::getConnxn new pool m_oracleHome:/home/ora11g/11.2/grid m_oracleSid:+ASM m_usrOraEnv:
2011-10-09 19:59:29.438: [ora.DATA1.dg][3022314384] {0:0:92} [start] ConnectionPool::ConnectionPool 2 m_oracleHome:/home/ora11g/11.2/grid, m_oracleSid:+ASM, m_usrOraEnv:
2011-10-09 19:59:29.439: [ora.DATA1.dg][3022314384] {0:0:92} [start] ConnectionPool::getConnection 260 pConnxn 09a2b628
2011-10-09 19:59:29.439: [ora.DATA1.dg][3022314384] {0:0:92} [start] DgpAgent::getConnxn connected
2011-10-09 19:59:29.443: [ora.DATA1.dg][3022314384] {0:0:92} [start] InstConnection:connectInt:is up
2011-10-09 19:59:29.455: [ora.DATA1.dg][3022314384] {0:0:92} [start] DgpAgent::queryDgStatus no data found in v$asm_diskgroup_stat
2011-10-09 19:59:29.455: [ora.DATA1.dg][3022314384] {0:0:92} [start] DgpAgent::runCheck:clsagfw_res_status 1
2011-10-09 19:59:29.456: [ora.DATA1.dg][3022314384] {0:0:92} [start] InstConnection:connectInt:is up
2011-10-09 19:59:29.552: [ora.DATA1.dg][3022314384] {0:0:92} [start] ORA-15032: not all alterations performed
ORA-15017: diskgroup "DATA1" cannot be mounted
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DATA1"
2011-10-09 19:59:29.552: [ora.DATA1.dg][3022314384] {0:0:92} [start] ConnectionPool::releaseConnection InstConnection 09a2b628
2011-10-09 19:59:29.553: [ AGENT][3022314384] {0:0:92} UserErrorException: Locale is
2011-10-09 19:59:29.554: [ora.DATA1.dg][3022314384] {0:0:92} [start] clsnUtils::error Exception type=2 string=
CRS-5017: The resource action "ora.DATA1.dg start" encountered the following error:
ORA-15032: not all alterations performed
ORA-15017: diskgroup "DATA1" cannot be mounted
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DATA1"
[ora11g@11gr2test ~]$ export ORACLE_SID=+ASM
[ora11g@11gr2test ~]$ sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.2.0 Production on Sun Oct 9 20:03:44 2011
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup mount
ORA-32004: obsolete or deprecated parameter(s) specified for ASM instance
ORA-01031: insufficient privileges
SQL> conn sys/roger as sysdba
Connected to an idle instance.
SQL> startup mount
ORA-32004: obsolete or deprecated parameter(s) specified for ASM instance
ORA-01031: insufficient privileges
SQL> exit
Disconnected
[ora11g@11gr2test ~]$ sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.2.0 Production on Sun Oct 9 20:08:41 2011
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup force
ORA-32004: obsolete or deprecated parameter(s) specified for ASM instance
ORA-01031: insufficient privileges
SQL> exit
Disconnected
[ora11g@11gr2test ~]$ pwd
/home/ora11g
[ora11g@11gr2test ~]$ export ORACLE_HOME=/home/ora11g/11.2/grid
[ora11g@11gr2test ~]$ sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.2.0 Production on Sun Oct 9 20:09:21 2011
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
With the Automatic Storage Management option
SQL> show parameter asm
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
asm_diskgroups string
asm_diskstring string
asm_power_limit integer 1
asm_preferred_read_failure_groups string
SQL> select * from v$asm_diskgroup_stat;
no rows selected
SQL> show parameter spfile
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string
SQL> alter system set asm_diskgroups='DATA1','DATA';
System altered.
SQL> show parameter asm
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
asm_diskgroups string DATA1, DATA
asm_diskstring string
asm_power_limit integer 1
asm_preferred_read_failure_groups string
SQL> alter system set asm_diskstring='/dev/sdc','/dev/sdb','/dev/sdd';
System altered.
SQL> select * from v$asm_diskgroup_stat;
no rows selected
SQL> SET LINESIZE 145
SQL> SET PAGESIZE 9999
SQL> SET VERIFY off
SQL> COLUMN group_name FORMAT a20 HEAD 'Disk Group|Name'
SQL> COLUMN sector_size FORMAT 99,999 HEAD 'Sector|Size'
SQL> COLUMN block_size FORMAT 99,999 HEAD 'Block|Size'
SQL> COLUMN allocation_unit_size FORMAT 999,999,999 HEAD 'Allocation|Unit Size'
SQL> COLUMN state FORMAT a11 HEAD 'State'
SQL> COLUMN type FORMAT a6 HEAD 'Type'
SQL> COLUMN total_mb FORMAT 999,999,999 HEAD 'Total Size (MB)'
SQL> COLUMN used_mb FORMAT 999,999,999 HEAD 'Used Size (MB)'
SQL> COLUMN pct_used FORMAT 999.99 HEAD 'Pct. Used'
SQL> break on report on disk_group_name skip 1
SQL> compute sum label "Grand Total: " of total_mb used_mb on report
SQL> SELECT
2 name group_name
3 , sector_size sector_size
4 , block_size block_size
5 , allocation_unit_size allocation_unit_size
6 , state state
7 , type type
8 , total_mb total_mb
9 , (total_mb - free_mb) used_mb
10 , ROUND((1- (free_mb / total_mb))*100, 2) pct_used
11 FROM
12 v$asm_diskgroup
13 ORDER BY
14 name
15 /
, ROUND((1- (free_mb / total_mb))*100, 2) pct_used
*
ERROR at line 10:
ORA-01476: divisor is equal to zero
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
With the Automatic Storage Management option
[ora11g@11gr2test ~]$ crs_start ora.DATA1.dg
Attempting to start `ora.DATA1.dg` on member `11gr2test`
Start of `ora.DATA1.dg` on member `11gr2test` succeeded.
Attempting to start `ora.roger.db` on member `11gr2test`
Start of `ora.roger.db` on member `11gr2test` succeeded.
[ora11g@11gr2test ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.DATA1.dg ora....up.type ONLINE ONLINE 11gr2test
ora....ER.lsnr ora....er.type ONLINE ONLINE 11gr2test
ora.asm ora.asm.type ONLINE ONLINE 11gr2test
ora.cssd ora.cssd.type ONLINE ONLINE 11gr2test
ora.diskmon ora....on.type ONLINE ONLINE 11gr2test
ora.evmd ora.evm.type ONLINE ONLINE 11gr2test
ora.ons ora.ons.type OFFLINE OFFLINE
ora.roger.db ora....se.type ONLINE ONLINE 11gr2test
需要说明一点的是，11gR2 asm已经放到grid里面了，我们设置ORACLE_HOME的时候
需要设置为grid安装的home目录。
[ora11g@11gr2test ~]$ sqlplus "/as sysdba"
SQL*Plus: Release 11.2.0.2.0 Production on Sun Oct 9 20:17:38 2011
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
With the Automatic Storage Management option
SQL> show parameter asm
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
asm_diskgroups string DATA1, DATA
asm_diskstring string /dev/sdc, /dev/sdb, /dev/sdd
asm_power_limit integer 1
asm_preferred_read_failure_groups string
SQL> show parameter pfile
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string
SQL> show parameter spfile
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
spfile string
SQL> create spfile from pfile;
create spfile from pfile
*
ERROR at line 1:
ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/home/ora11g/11.2/grid/dbs/init+ASM.ora'
SQL> create pfile='/home/ora11g/11.2/grid/dbs/init+ASM.ora' from pfile;
create pfile='/home/ora11g/11.2/grid/dbs/init+ASM.ora' from pfile
*
ERROR at line 1:
ORA-00922: missing or invalid option
SQL> create pfile='/home/ora11g/11.2/grid/dbs/init+ASM.ora' from spfile;
create pfile='/home/ora11g/11.2/grid/dbs/init+ASM.ora' from spfile
*
ERROR at line 1:
ORA-01565: error in identifying file '?/dbs/spfile@.ora'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3
SQL> create pfile='/home/ora11g/11.2/grid/dbs/init+ASM.ora' from memory;
File created.
[ora11g@11gr2test ~]$ strings /home/ora11g/11.2/grid/dbs/init+ASM.ora
# Oracle init.ora parameter file generated by instance +ASM on 10/09/2011 20:20:12
_aggregation_optimization_settings=0
_always_anti_join='CHOOSE'
_always_semi_join='CHOOSE'
_and_pruning_enabled=TRUE
_b_tree_bitmap_plans=TRUE
_bloom_filter_enabled=TRUE
_bloom_folding_enabled=TRUE
_bloom_pruning_enabled=TRUE
_complex_view_merging=TRUE
_compression_compatibility='11.2.0'
_connect_by_use_union_all='TRUE'
_convert_set_to_join=FALSE
_cost_equality_semi_join=TRUE
_cpu_to_io=0
_dimension_skip_null=TRUE
_dummy_instance=TRUE
_eliminate_common_subexpr=TRUE
_enable_type_dep_selectivity=TRUE
_fast_full_scan_enabled=TRUE
_first_k_rows_dynamic_proration=TRUE
_gby_hash_aggregation_enabled=TRUE
_generalized_pruning_enabled=TRUE
_globalindex_pnum_filter_enabled=TRUE
_gs_anti_semi_join_allowed=TRUE
_improved_outerjoin_card=TRUE
_improved_row_length_enabled=TRUE
_index_join_enabled=TRUE
_ksb_restart_policy_times='0'
_ksb_restart_policy_times='60'
_ksb_restart_policy_times='120'
_ksb_restart_policy_times='240' # internal update to set default
_left_nested_loops_random=TRUE
_local_communication_costing_enabled=TRUE
_minimal_stats_aggregation=TRUE
_mmv_query_rewrite_enabled=TRUE
_new_initial_join_orders=TRUE
_new_sort_cost_estimate=TRUE
_nlj_batching_enabled=1
_optim_adjust_for_part_skews=TRUE
_optim_enhance_nnull_detection=TRUE
_optim_new_default_join_sel=TRUE
_optim_peek_user_binds=TRUE
_optimizer_adaptive_cursor_sharing=TRUE
_optimizer_better_inlist_costing='ALL'
_optimizer_cbqt_no_size_restriction=TRUE
_optimizer_coalesce_subqueries=TRUE
_optimizer_complex_pred_selectivity=TRUE
_optimizer_compute_index_stats=TRUE
_optimizer_connect_by_combine_sw=TRUE
_optimizer_connect_by_cost_based=TRUE
_optimizer_connect_by_elim_dups=TRUE
_optimizer_correct_sq_selectivity=TRUE
_optimizer_cost_based_transformation='LINEAR'
_optimizer_cost_hjsmj_multimatch=TRUE
_optimizer_cost_model='CHOOSE'
_optimizer_dim_subq_join_sel=TRUE
_optimizer_distinct_agg_transform=TRUE
_optimizer_distinct_elimination=TRUE
_optimizer_distinct_placement=TRUE
_optimizer_eliminate_filtering_join=TRUE
_optimizer_enable_density_improvements=TRUE
_optimizer_enable_extended_stats=TRUE
_optimizer_enable_table_lookup_by_nl=TRUE
_optimizer_enhanced_filter_push=TRUE
_optimizer_extend_jppd_view_types=TRUE
_optimizer_extended_cursor_sharing='UDO'
_optimizer_extended_cursor_sharing_rel='SIMPLE'
_optimizer_extended_stats_usage_control=192
_optimizer_false_filter_pred_pullup=TRUE
_optimizer_fast_access_pred_analysis=TRUE
_optimizer_fast_pred_transitivity=TRUE
_optimizer_filter_pred_pullup=TRUE
_optimizer_fkr_index_cost_bias=10
_optimizer_group_by_placement=TRUE
_optimizer_improve_selectivity=TRUE
_optimizer_interleave_jppd=TRUE
_optimizer_join_elimination_enabled=TRUE
_optimizer_join_factorization=TRUE
_optimizer_join_order_control=3
_optimizer_join_sel_sanity_check=TRUE
_optimizer_max_permutations=2000
_optimizer_mode_force=TRUE
_optimizer_multi_level_push_pred=TRUE
_optimizer_native_full_outer_join='FORCE'
_optimizer_new_join_card_computation=TRUE
_optimizer_null_aware_antijoin=TRUE
_optimizer_or_expansion='DEPTH'
_optimizer_order_by_elimination_enabled=TRUE
_optimizer_outer_to_anti_enabled=TRUE
_optimizer_push_down_distinct=0
_optimizer_push_pred_cost_based=TRUE
_optimizer_rownum_bind_default=10
_optimizer_rownum_pred_based_fkr=TRUE
_optimizer_skip_scan_enabled=TRUE
_optimizer_sortmerge_join_inequality=TRUE
_optimizer_squ_bottomup=TRUE
_optimizer_star_tran_in_with_clause=TRUE
_optimizer_system_stats_usage=TRUE
_optimizer_table_expansion=TRUE
_optimizer_transitivity_retain=TRUE
_optimizer_try_st_before_jppd=TRUE
_optimizer_undo_cost_change='11.2.0.2'
_optimizer_unnest_corr_set_subq=TRUE
_optimizer_unnest_disjunctive_subq=TRUE
_optimizer_use_cbqt_star_transformation=TRUE
_optimizer_use_feedback=TRUE
_or_expand_nvl_predicate=TRUE
_ordered_nested_loop=TRUE
_parallel_broadcast_enabled=TRUE
_partition_view_enabled=TRUE
_pivot_implementation_method='CHOOSE'
_pre_rewrite_push_pred=TRUE
_pred_move_around=TRUE
_push_join_predicate=TRUE
_push_join_union_view=TRUE
_push_join_union_view2=TRUE
_px_minus_intersect=TRUE
_px_partition_scan_enabled=TRUE
_px_pwg_enabled=TRUE
_px_ual_serial_input=TRUE
_query_rewrite_setopgrw_enable=TRUE
_remove_aggr_subquery=TRUE
_replace_virtual_columns=TRUE
_right_outer_hash_enable=TRUE
_selfjoin_mv_duplicates=TRUE
_sql_model_unfold_forloops='RUN_TIME'
_subquery_pruning_enabled=TRUE
_subquery_pruning_mv_enabled=FALSE
_table_scan_cost_plus_one=TRUE
_union_rewrite_for_gs='YES_GSET_MVS'
_unnest_subquery=TRUE
_use_column_stats_for_function=TRUE
asm_diskgroups='DATA1'
asm_diskgroups='DATA'
asm_diskstring='/dev/sdc'
asm_diskstring='/dev/sdb'
asm_diskstring='/dev/sdd'
background_dump_dest='/home/ora11g/11.2/grid/log/diag/asm/+asm/+ASM/trace' #Deprecate parameter
core_dump_dest='/home/ora11g/11.2/grid/log/diag/asm/+asm/+ASM/cdump'
local_listener='(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.83.10)(PORT=1521))))'
user_dump_dest='/home/ora11g/11.2/grid/log/diag/asm/+asm/+ASM/trace' #Deprecate parameter
我们可以看到，background_dump_dest和user_dump_dest在11.2中已经被废弃了。
SQL> create spfile from pfile='/home/ora11g/asm.ora';
File created.
SQL> !strings asm.ora
asm_diskgroups='DATA1'
asm_diskgroups='DATA'
asm_diskstring='/dev/sdc'
asm_diskstring='/dev/sdb'
asm_diskstring='/dev/sdd'
core_dump_dest='/home/ora11g/11.2/grid/log/diag/asm/+asm/+ASM/cdump'
local_listener='(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.83.10)(PORT=1521))))'
[ora11g@11gr2test ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.DATA1.dg ora....up.type ONLINE ONLINE 11gr2test
ora....ER.lsnr ora....er.type ONLINE ONLINE 11gr2test
ora.asm ora.asm.type ONLINE ONLINE 11gr2test
ora.cssd ora.cssd.type ONLINE ONLINE 11gr2test
ora.diskmon ora....on.type ONLINE ONLINE 11gr2test
ora.evmd ora.evm.type ONLINE ONLINE 11gr2test
ora.ons ora.ons.type OFFLINE OFFLINE
ora.roger.db ora....se.type ONLINE ONLINE 11gr2test
[ora11g@11gr2test ~]$ crsctl stop has
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on '11gr2test'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on '11gr2test'
CRS-2673: Attempting to stop 'ora.roger.db' on '11gr2test'
CRS-2673: Attempting to stop 'ora.evmd' on '11gr2test'
CRS-2677: Stop of 'ora.roger.db' on '11gr2test' succeeded
CRS-2673: Attempting to stop 'ora.DATA1.dg' on '11gr2test'
CRS-2677: Stop of 'ora.DATA1.dg' on '11gr2test' succeeded
CRS-2673: Attempting to stop 'ora.asm' on '11gr2test'
CRS-2677: Stop of 'ora.asm' on '11gr2test' succeeded
CRS-2673: Attempting to stop 'ora.cssd' on '11gr2test'
CRS-2677: Stop of 'ora.evmd' on '11gr2test' succeeded
CRS-2677: Stop of 'ora.cssd' on '11gr2test' succeeded
CRS-2673: Attempting to stop 'ora.diskmon' on '11gr2test'
CRS-2677: Stop of 'ora.LISTENER.lsnr' on '11gr2test' succeeded
CRS-2677: Stop of 'ora.diskmon' on '11gr2test' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on '11gr2test' has completed
CRS-4133: Oracle High Availability Services has been stopped.
[ora11g@11gr2test ~]$ crsctl start has
[ora11g@11gr2test ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.DATA1.dg ora....up.type ONLINE OFFLINE
ora....ER.lsnr ora....er.type ONLINE ONLINE 11gr2test
ora.asm ora.asm.type ONLINE OFFLINE
ora.cssd ora.cssd.type ONLINE OFFLINE
ora.diskmon ora....on.type ONLINE ONLINE 11gr2test
ora.evmd ora.evm.type ONLINE ONLINE 11gr2test
ora.ons ora.ons.type OFFLINE OFFLINE
ora.roger.db ora....se.type ONLINE OFFLINE
[ora11g@11gr2test ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.DATA1.dg ora....up.type ONLINE ONLINE 11gr2test
ora....ER.lsnr ora....er.type ONLINE ONLINE 11gr2test
ora.asm ora.asm.type ONLINE ONLINE 11gr2test
ora.cssd ora.cssd.type ONLINE ONLINE 11gr2test
ora.diskmon ora....on.type ONLINE ONLINE 11gr2test
ora.evmd ora.evm.type ONLINE ONLINE 11gr2test
ora.ons ora.ons.type OFFLINE OFFLINE
ora.roger.db ora....se.type ONLINE OFFLINE
[ora11g@11gr2test ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora.DATA1.dg ora....up.type ONLINE ONLINE 11gr2test
ora....ER.lsnr ora....er.type ONLINE ONLINE 11gr2test
ora.asm ora.asm.type ONLINE ONLINE 11gr2test
ora.cssd ora.cssd.type ONLINE ONLINE 11gr2test
ora.diskmon ora....on.type ONLINE ONLINE 11gr2test
ora.evmd ora.evm.type ONLINE ONLINE 11gr2test
ora.ons ora.ons.type OFFLINE OFFLINE
ora.roger.db ora....se.type ONLINE ONLINE 11gr2test
最后启动实例以后，再次查询，就正常了，再次也说明 Tanel Poder 的scripts似乎存在一些问题：
SQL> SELECT
2 name group_name
3 , sector_size sector_size
4 , block_size block_size
5 , allocation_unit_size allocation_unit_size
6 , state state
7 , type type
8 , total_mb total_mb
9 , (total_mb - free_mb) used_mb
10 , ROUND((1- (free_mb / total_mb))*100, 2) pct_used
11 FROM
12 v$asm_diskgroup
13 ORDER BY
14 name
15 /
Disk Group Sector Block Allocation
Name Size Size Unit Size State Type Total Size (MB) Used Size (MB) Pct. Used
-------------------- ------- ------- ------------ ----------- ------ --------------- -------------- ---------
DATA1 512 4,096 1,048,576 MOUNTED EXTERN 4,096 1,714 41.85
--------------- --------------
Grand Total: 4,096 1,714
最后再补充一点，关于create pfile from memory出来以后，为什么里面会多那么多隐含参数呢？
做个10046 event发现了执行了如下的sql：
select num,name,type,display_value,update_comment from v$system_parameter4 order by lower(name),ordinal
难怪。。。
最好搜索MOS，居然发现了这样一篇文档，大家可以参考如下note：
Why does create PFILE|SPFILE from MEMORY output differ from that of SPFILE|PFILE? [ID 784133.1]
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