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青春的、脚步:
xingmei_ok 写道解密失败。。。。原始:aMD5后:0 ...
java的MD5加密、解密 -
xingmei_ok:
New_Mao_Er 写道看着标题我就蛋疼了,md5 是一个摘 ...
java的MD5加密、解密 -
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解密失败。。。。
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java的MD5加密、解密
This script determines whether an index is a good candidate for a rebuild or for
a bitmap index. All indexes for a given schema or for a subset of schema’s are
analyzed (except indexes under SYS and SYSTEM)
Product Name, Product Version
Oracle Server, 7.3.x to 10g
Platform Platform Independent
Date Created 15-Feb-2001
Instructions
Execution Environment:
<SQL, SQL*Plus, iSQL*Plus>
Access Privileges:
Requires DBA privileges in order to be executed.
Usage:
sqlplus <user>/<pw> @ind_an
Instructions:
Copy the script into the file ind_an.sql. Execute the script from SQL*Plus connected
with a user with DBA privileges. The script requires to parameters:
1. Name of the output file where the report while be generated
2. Name of the SCHEMA to be analyzed.
PROOFREAD THIS SCRIPT BEFORE USING IT! Due to differences in the way text
editors, e-mail packages, and operating systems handle text formatting (spaces,
tabs, and carriage returns), this script may not be in an executable state
when you first receive it. Check over the script to ensure that errors of
this type are corrected.
Description
This script determines whether an index is a good candidate for a rebuild or for
a bitmap index. All indexes for a given schema or for a subset of schema’s are
analyzed (except indexes under SYS and SYSTEM).
Sample Output
————-
Owner Index Name % Deleted Entries Blevel Distinctivenes
————— ————————- —————– —— ————-
SMS PLATMAP_I1 31.504 1 32.927
SMS PLATMAP_I2 27.682 1 29.399
SMS PLATMAP_I3 31.237 1 31.237
SMS PRODMAP_I4 8.765 5 99.9
SMS SB_CR_BOM_ITEMS_I1 34.496 2 97.356
SMS SB_CR_OS_VERSIONS_I1 51.942 1 68.063
SMS SB_CR_RELEASES_I1 34.584 1 18.426
SMS TAR_HEAD_I2 21.728 5 22.344
Rebuild the index when:
- deleted entries represent 20% or more of the current entries.
- the index depth is more then 4 levels.
Possible candidate for bitmap index:
- when distinctiveness is more than 99%
References
SQL Reference Guide
Script
REM =============================================================
REM
REM rebuild_indx.sql
REM
REM Copyright (c) Oracle Software, 1998 – 2000
REM
REM Author : Jurgen Schelfhout
REM
REM The sample program in this article is provided for educational
REM purposes only and is NOT supported by Oracle Support Services.
REM It has been tested internally, however, and works as documented.
REM We do not guarantee that it will work for you, so be sure to test
REM it in your environment before relying on it.
REM
REM This script will analyze all the indexes for a given schema
REM or for a subset of schema’s. After this the dynamic view
REM index_stats is consulted to see if an index is a good
REM candidate for a rebuild or for a bitmap index.
REM
REM Database Version : 7.3.X and above.
REM
REM NOTE: If running this on 10g, you must exclude the
REM objects in the Recycle Bin
REM cursor c_indx is
REM select owner, table_name, index_name
REM from dba_indexes
REM where owner like upper(‘&schema’)
REM and table_name not like ‘BIN$%’
REM and owner not in (‘SYS’,'SYSTEM’);
REM
REM Additional References for Recycle Bin functionality:
REM Note.265254.1 Flashback Table feature in Oracle Database 10g
REM Note.265253.1 10g Recyclebin Features And How To Disable it(_recyclebin)
REM
REM =============================================================
prompt
ACCEPT spoolfile CHAR prompt ‘Output-file : ‘;
ACCEPT schema CHAR prompt ‘Schema name (% allowed) : ‘;
prompt
prompt
prompt Rebuild the index when :
prompt – deleted entries represent 20% or more of the current entries
prompt – the index depth is more then 4 levels.
prompt Possible candidate for bitmap index :
prompt – when distinctiveness is more than 99%
prompt
spool &spoolfile
set serveroutput on
set verify off
declare
c_name INTEGER;
ignore INTEGER;
height index_stats.height%TYPE := 0;
lf_rows index_stats.lf_rows%TYPE := 0;
del_lf_rows index_stats.del_lf_rows%TYPE := 0;
distinct_keys index_stats.distinct_keys%TYPE := 0;
cursor c_indx is
select owner, table_name, index_name
from dba_indexes
where owner like upper(‘&schema’)
and owner not in (‘SYS’,'SYSTEM’);
begin
dbms_output.enable (1000000);
dbms_output.put_line (‘Owner Index Name % Deleted Entries Blevel Distinctiveness’);
dbms_output.put_line (‘————— ————————————— —————– —— —————’);
c_name := DBMS_SQL.OPEN_CURSOR;
for r_indx in c_indx loop
DBMS_SQL.PARSE(c_name,’analyze index ‘ || r_indx.owner || ‘.’ ||
r_indx.index_name || ‘ validate structure’,DBMS_SQL.NATIVE);
ignore := DBMS_SQL.EXECUTE(c_name);
select HEIGHT, decode (LF_ROWS,0,1,LF_ROWS), DEL_LF_ROWS,
decode (DISTINCT_KEYS,0,1,DISTINCT_KEYS)
into height, lf_rows, del_lf_rows, distinct_keys
from index_stats;
–
– Index is considered as candidate for rebuild when :
– – when deleted entries represent 20% or more of the current entries
– – when the index depth is more then 4 levels.(height starts counting from 1 so > 5)
– Index is (possible) candidate for a bitmap index when :
– – distinctiveness is more than 99%
–
if ( height > 5 ) OR ( (del_lf_rows/lf_rows) > 0.2 ) then
dbms_output.put_line (rpad(r_indx.owner,16,’ ‘) || rpad(r_indx.index_name,40,’ ‘) ||
lpad(round((del_lf_rows/lf_rows)*100,3),17,’ ‘) ||
lpad(height-1,7,’ ‘) || lpad(round((lf_rows-distinct_keys)*100/lf_rows,3),16,’ ‘));
end if;
end loop;
DBMS_SQL.CLOSE_CURSOR(c_name);
end;
/
spool off
set verify on
Disclaimer
EXCEPT WHERE EXPRESSLY PROVIDED OTHERWISE, THE INFORMATION, SOFTWARE,
PROVIDED ON AN “AS IS” AND “AS AVAILABLE” BASIS. ORACLE EXPRESSLY DISCLAIMS
ALL WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NON-INFRINGEMENT. ORACLE MAKES NO WARRANTY THAT: (A) THE RESULTS
THAT MAY BE OBTAINED FROM THE USE OF THE SOFTWARE WILL BE ACCURATE OR
RELIABLE; OR (B) THE INFORMATION, OR OTHER MATERIAL OBTAINED WILL MEET YOUR
EXPECTATIONS. ANY CONTENT, MATERIALS, INFORMATION OR SOFTWARE DOWNLOADED OR
OTHERWISE OBTAINED IS DONE AT YOUR OWN DISCRETION AND RISK. ORACLE SHALL HAVE
NO RESPONSIBILITY FOR ANY DAMAGE TO YOUR COMPUTER SYSTEM OR LOSS OF DATA THAT
RESULTS FROM THE DOWNLOAD OF ANY CONTENT, MATERIALS, INFORMATION OR SOFTWARE.
ORACLE RESERVES THE RIGHT TO MAKE CHANGES OR UPDATES TO THE SOFTWARE AT ANY
TIME WITHOUT NOTICE.
Limitation of Liability
IN NO EVENT SHALL ORACLE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL OR CONSEQUENTIAL DAMAGES, OR DAMAGES FOR LOSS OF PROFITS, REVENUE,
DATA OR USE, INCURRED BY YOU OR ANY THIRD PARTY, WHETHER IN AN ACTION IN
CONTRACT OR TORT, ARISING FROM YOUR ACCESS TO, OR USE OF, THE SOFTWARE.
SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY.
ACCORDINGLY, SOME OF THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.
摘自 metalink
http://www.youyus.com/?p=288
a bitmap index. All indexes for a given schema or for a subset of schema’s are
analyzed (except indexes under SYS and SYSTEM)
Product Name, Product Version
Oracle Server, 7.3.x to 10g
Platform Platform Independent
Date Created 15-Feb-2001
Instructions
Execution Environment:
<SQL, SQL*Plus, iSQL*Plus>
Access Privileges:
Requires DBA privileges in order to be executed.
Usage:
sqlplus <user>/<pw> @ind_an
Instructions:
Copy the script into the file ind_an.sql. Execute the script from SQL*Plus connected
with a user with DBA privileges. The script requires to parameters:
1. Name of the output file where the report while be generated
2. Name of the SCHEMA to be analyzed.
PROOFREAD THIS SCRIPT BEFORE USING IT! Due to differences in the way text
editors, e-mail packages, and operating systems handle text formatting (spaces,
tabs, and carriage returns), this script may not be in an executable state
when you first receive it. Check over the script to ensure that errors of
this type are corrected.
Description
This script determines whether an index is a good candidate for a rebuild or for
a bitmap index. All indexes for a given schema or for a subset of schema’s are
analyzed (except indexes under SYS and SYSTEM).
Sample Output
————-
Owner Index Name % Deleted Entries Blevel Distinctivenes
————— ————————- —————– —— ————-
SMS PLATMAP_I1 31.504 1 32.927
SMS PLATMAP_I2 27.682 1 29.399
SMS PLATMAP_I3 31.237 1 31.237
SMS PRODMAP_I4 8.765 5 99.9
SMS SB_CR_BOM_ITEMS_I1 34.496 2 97.356
SMS SB_CR_OS_VERSIONS_I1 51.942 1 68.063
SMS SB_CR_RELEASES_I1 34.584 1 18.426
SMS TAR_HEAD_I2 21.728 5 22.344
Rebuild the index when:
- deleted entries represent 20% or more of the current entries.
- the index depth is more then 4 levels.
Possible candidate for bitmap index:
- when distinctiveness is more than 99%
References
SQL Reference Guide
Script
REM =============================================================
REM
REM rebuild_indx.sql
REM
REM Copyright (c) Oracle Software, 1998 – 2000
REM
REM Author : Jurgen Schelfhout
REM
REM The sample program in this article is provided for educational
REM purposes only and is NOT supported by Oracle Support Services.
REM It has been tested internally, however, and works as documented.
REM We do not guarantee that it will work for you, so be sure to test
REM it in your environment before relying on it.
REM
REM This script will analyze all the indexes for a given schema
REM or for a subset of schema’s. After this the dynamic view
REM index_stats is consulted to see if an index is a good
REM candidate for a rebuild or for a bitmap index.
REM
REM Database Version : 7.3.X and above.
REM
REM NOTE: If running this on 10g, you must exclude the
REM objects in the Recycle Bin
REM cursor c_indx is
REM select owner, table_name, index_name
REM from dba_indexes
REM where owner like upper(‘&schema’)
REM and table_name not like ‘BIN$%’
REM and owner not in (‘SYS’,'SYSTEM’);
REM
REM Additional References for Recycle Bin functionality:
REM Note.265254.1 Flashback Table feature in Oracle Database 10g
REM Note.265253.1 10g Recyclebin Features And How To Disable it(_recyclebin)
REM
REM =============================================================
prompt
ACCEPT spoolfile CHAR prompt ‘Output-file : ‘;
ACCEPT schema CHAR prompt ‘Schema name (% allowed) : ‘;
prompt
prompt
prompt Rebuild the index when :
prompt – deleted entries represent 20% or more of the current entries
prompt – the index depth is more then 4 levels.
prompt Possible candidate for bitmap index :
prompt – when distinctiveness is more than 99%
prompt
spool &spoolfile
set serveroutput on
set verify off
declare
c_name INTEGER;
ignore INTEGER;
height index_stats.height%TYPE := 0;
lf_rows index_stats.lf_rows%TYPE := 0;
del_lf_rows index_stats.del_lf_rows%TYPE := 0;
distinct_keys index_stats.distinct_keys%TYPE := 0;
cursor c_indx is
select owner, table_name, index_name
from dba_indexes
where owner like upper(‘&schema’)
and owner not in (‘SYS’,'SYSTEM’);
begin
dbms_output.enable (1000000);
dbms_output.put_line (‘Owner Index Name % Deleted Entries Blevel Distinctiveness’);
dbms_output.put_line (‘————— ————————————— —————– —— —————’);
c_name := DBMS_SQL.OPEN_CURSOR;
for r_indx in c_indx loop
DBMS_SQL.PARSE(c_name,’analyze index ‘ || r_indx.owner || ‘.’ ||
r_indx.index_name || ‘ validate structure’,DBMS_SQL.NATIVE);
ignore := DBMS_SQL.EXECUTE(c_name);
select HEIGHT, decode (LF_ROWS,0,1,LF_ROWS), DEL_LF_ROWS,
decode (DISTINCT_KEYS,0,1,DISTINCT_KEYS)
into height, lf_rows, del_lf_rows, distinct_keys
from index_stats;
–
– Index is considered as candidate for rebuild when :
– – when deleted entries represent 20% or more of the current entries
– – when the index depth is more then 4 levels.(height starts counting from 1 so > 5)
– Index is (possible) candidate for a bitmap index when :
– – distinctiveness is more than 99%
–
if ( height > 5 ) OR ( (del_lf_rows/lf_rows) > 0.2 ) then
dbms_output.put_line (rpad(r_indx.owner,16,’ ‘) || rpad(r_indx.index_name,40,’ ‘) ||
lpad(round((del_lf_rows/lf_rows)*100,3),17,’ ‘) ||
lpad(height-1,7,’ ‘) || lpad(round((lf_rows-distinct_keys)*100/lf_rows,3),16,’ ‘));
end if;
end loop;
DBMS_SQL.CLOSE_CURSOR(c_name);
end;
/
spool off
set verify on
Disclaimer
EXCEPT WHERE EXPRESSLY PROVIDED OTHERWISE, THE INFORMATION, SOFTWARE,
PROVIDED ON AN “AS IS” AND “AS AVAILABLE” BASIS. ORACLE EXPRESSLY DISCLAIMS
ALL WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NON-INFRINGEMENT. ORACLE MAKES NO WARRANTY THAT: (A) THE RESULTS
THAT MAY BE OBTAINED FROM THE USE OF THE SOFTWARE WILL BE ACCURATE OR
RELIABLE; OR (B) THE INFORMATION, OR OTHER MATERIAL OBTAINED WILL MEET YOUR
EXPECTATIONS. ANY CONTENT, MATERIALS, INFORMATION OR SOFTWARE DOWNLOADED OR
OTHERWISE OBTAINED IS DONE AT YOUR OWN DISCRETION AND RISK. ORACLE SHALL HAVE
NO RESPONSIBILITY FOR ANY DAMAGE TO YOUR COMPUTER SYSTEM OR LOSS OF DATA THAT
RESULTS FROM THE DOWNLOAD OF ANY CONTENT, MATERIALS, INFORMATION OR SOFTWARE.
ORACLE RESERVES THE RIGHT TO MAKE CHANGES OR UPDATES TO THE SOFTWARE AT ANY
TIME WITHOUT NOTICE.
Limitation of Liability
IN NO EVENT SHALL ORACLE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL OR CONSEQUENTIAL DAMAGES, OR DAMAGES FOR LOSS OF PROFITS, REVENUE,
DATA OR USE, INCURRED BY YOU OR ANY THIRD PARTY, WHETHER IN AN ACTION IN
CONTRACT OR TORT, ARISING FROM YOUR ACCESS TO, OR USE OF, THE SOFTWARE.
SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OR EXCLUSION OF LIABILITY.
ACCORDINGLY, SOME OF THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.
摘自 metalink
http://www.youyus.com/?p=288
发表评论
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2010-05-25 12:49 1029关于oracle在linux系统下安装后,如何在系统重启的情况 ... -
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2010-05-25 11:14 3225order by 使用索引的情况 參考http://pub. ... -
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Oracle行列转换总结
2010-04-19 21:08 718oracle行列转换总结 最近论坛很多人提的问题都与行列转 ... -
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sql中使用: case
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关于数据库中使用 left join on ...and ...和 left join on ....where ...区别,和使用group by 要注意的情
2010-04-02 17:21 1382关于数据库中使用 left join on ...and .. ... -
sql多表连接查询inner join, left join , right join ,full join ,cross join 学习
2010-04-02 17:18 1990浅显易懂: inner join,ful ... -
Oracle - 一个sequence重置的方法
2010-04-01 14:20 1102Oracle - 一个sequence重置的方法 收藏 ... -
oracle主键自动增长的设置
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### Oracle 12.1 数据库性能调优...然而值得注意的是,每个组织的具体情况可能不同,因此在实施任何变更之前都需要充分评估其潜在影响。此外,随着Oracle后续版本的发布,新的特性和改进也将为性能调优带来更多可能性。