純好人不用打：白羊

沒(méi)人防：雙子（迷宮）、天平（卡妙的冰箱）、射手（迷宮）

打死：巨蟹（紫龍）、山羊（紫龍自曝）、雙魚（阿瞬）、水瓶（冰河）

沒(méi)打過(guò)，放水：獅子（星矢）、天蝎（冰河）、金牛（星矢）、處女（一輝）


這樣看來(lái)紫龍是最NB的，一個(gè)人干掉2個(gè)，而且靠他師傅走后門天平不用打，還用天平的武器救了冰河。

冰河和他師傅干了2仗
冰河那段也挺NB，先是在天平被凍個(gè)半死，然后在天蝎被針扎個(gè)半死，最后到了水瓶還能把他師傅干掉
冰河和他師傅是最體現(xiàn)實(shí)力的一仗，純實(shí)力對(duì)扣

合著星矢誰(shuí)也沒(méi)殺，就TM來(lái)打醬油的。。。
簡(jiǎn)單過(guò)一遍，詳細(xì)的以后遇到慢慢研究。
主要的更新在幾個(gè)方面：
1. OUI的改進(jìn)
2. Oracle Restart
3. ASM的增強(qiáng)！??！


New Grid Infrastructure Installation Option
?1. 單點(diǎn)包括：ASM、listener和Oracle Restart（監(jiān)控、管理并自動(dòng)重啟各個(gè)組件）
?2. 集群包括：ASM、listener和Clusterware

New Desktop and Server Class Options
?1. Desktop Class：適用于筆記本、臺(tái)式機(jī)
?2. Server Class：適用于服務(wù)器（功能上沒(méi)區(qū)別，多一些高級(jí)配置選項(xiàng)）

Daylight Savings Time Upgrade of Timestamp with Timezone Data Type
?新的DBMS_DST包，優(yōu)化對(duì)TIMESTAMP WITH TIMEZONE數(shù)據(jù)的管理

SYSASM Privilege
?管理ASM需要SYSASM權(quán)限，旨在分清ASM管理和DB管理

Fixup Scripts and Prerequisite Checks
?安裝前檢查時(shí)，如果遇到不符合要求的配置，OUI會(huì)對(duì)一些檢查項(xiàng)自動(dòng)生成fixup腳本，用root執(zhí)行就可以解決相應(yīng)問(wèn)題。

New Tool to Configure Custom Installation Options
?OUI不在提供對(duì)單個(gè)組件的配置功能，如果需要只能用$ORACLE_HOME/bin/chopt命令行進(jìn)行配置。我想Oracle的趨勢(shì)就是為了讓更多已經(jīng)成熟的配置自動(dòng)化，簡(jiǎn)化使用。

Deinstallation Tool
?OUI不再用來(lái)刪除oracle軟件，請(qǐng)使用$ORACLE_HOME/deinstall

Intelligent Data Placement
?指定ASM磁盤的磁盤范圍，旨在將高頻訪問(wèn)的數(shù)據(jù)放在HOT region（比如磁盤的外道）

Oracle Automatic Storage Management Cluster File System (Oracle ACFS)
?為其它文件提供ASM的存儲(chǔ)功能

Data Pump Export and Data Pump Import
?Data Pump兼容Export/Import

Use Oracle Restart to Automatically Restart Your Database
?1. 針對(duì)單點(diǎn)環(huán)境
?2. 自動(dòng)重啟又問(wèn)題的組件，如：db instance、listener、asm instance

New Method of Installing Oracle Automatic Storage Management
?以前，ASM的安裝是伴隨著DB的安裝；現(xiàn)在是伴隨著Software的安裝。
?其實(shí)，就是把ASM上升到一個(gè)軟件的高度（以前只是db的一個(gè)組件）

SRVCTL Support for Single Instance Database in a Cluster
?SRVCTL統(tǒng)一管理單點(diǎn)（with Restart）和集群數(shù)據(jù)庫(kù)（with Clusterware）

Deprecated in Oracle Database 11g Release 2
?不支持裸設(shè)備了：要么用文件系統(tǒng)、要么用ASM，說(shuō)白了，企業(yè)環(huán)境就必須用ASM
?不支持Oracle Ultra Search（9i的一個(gè)什么鳥功能）






















重裝完系統(tǒng)，mysql不需要重裝，直接當(dāng)綠色版使用，還更干凈

//啟動(dòng)MYSQL
cd $MYSQL_HOME/bin
D:\JAVA\MYSQL\mysql-5.1.53-win32\bin>mysqld --console??????
110616? 1:26:26 [Note] Plugin 'FEDERATED' is disabled.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
110616? 1:26:26? InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
110616? 1:26:26? InnoDB: Started; log sequence number 0 44233
110616? 1:26:27 [Note] Event Scheduler: Loaded 0 events
110616? 1:26:27 [Note] mysqld: ready for connections.
Version: '5.1.53-community'? socket: ''? port: 3306? MySQL Community Server (GPL
)

//簡(jiǎn)單使用
mysql> show databases;
+--------------------+
| Database?????????? |
+--------------------+
| information_schema |
| mysql????????????? |
| test?????????????? |
+--------------------+
3 rows in set (0.03 sec)

mysql> use mysql
Database changed

mysql> show tables;
+---------------------------+
| Tables_in_mysql?????????? |
+---------------------------+
| columns_priv????????????? |
| db??????????????????????? |
| event???????????????????? |
| func????????????????????? |
| general_log?????????????? |
| help_category???????????? |
| help_keyword????????????? |
| help_relation???????????? |
| help_topic??????????????? |
| host????????????????????? |
| ndb_binlog_index????????? |


登陸
D:\JAVA\MYSQL\mysql-5.1.53-win32\bin>mysql.exe -uroot
創(chuàng)建數(shù)據(jù)庫(kù)
mysql> create database testdb;




--主鍵是非分區(qū)索引，也可以看作是全局
create table test_par1
(
? tdate?? varchar2(8) primary key
)
partition by range ( tdate )
(
???? partition p1 values less than ('20090201'),
???? partition p2 values less than ('20090301'),
???? partition pm values less than (MAXVALUE) ?
) tablespace test;


--主鍵是分區(qū)索引
create table test_par2
(
? tdate?? varchar2(8)
)
partition by range ( tdate )
(
???? partition p1 values less than ('20090201'),
???? partition p2 values less than ('20090301'),
???? partition pm values less than (MAXVALUE) ?
) tablespace test;

create index i_tdate2 on test_par2(tdate) local;

alter table test_par2 add constraint pk_tdate2 primary key(tdate);



--查看test_par2的DDL
select dbms_metadata.get_ddl( 'TABLE', 'TEST_PAR2' ) from dual;
--整理如下
create table test_par3
(
? tdate?? varchar2(8),
? constraint pk_tdate3 primary key (tdate) using index local
)
partition by range ( tdate )
(
???? partition p1 values less than ('20090201'),
???? partition p2 values less than ('20090301'),
???? partition pm values less than (MAXVALUE) ?
) tablespace test;


這個(gè)案例也告訴我們，在做DDL時(shí)，盡量還是顯示的寫出屬性，一些簡(jiǎn)易語(yǔ)法會(huì)引起不可知的定義。最后都用 get_ddl 再查一下，這才是Oracle真正執(zhí)行的DDL。
列出所有實(shí)例
[db2inst1@dcm ~]$ db2ilist
db2inst1

列出當(dāng)前實(shí)例下的所有數(shù)據(jù)庫(kù)
[db2inst1@dcm ~]$ db2 list db directory

?System Database Directory

?Number of entries in the directory = 1

Database 1 entry:

?Database alias?????????????????????? = SAMPLE
?Database name??????????????????????? = SAMPLE
?Local database directory???????????? = /home/db2inst1
?Database release level?????????????? = d.00
?Comment????????????????????????????? =
?Directory entry type???????????????? = Indirect
?Catalog database partition number??? = 0
?Alternate server hostname??????????? =
?Alternate server port number???????? =

啟動(dòng)實(shí)例
[db2inst1@dcm ~]$ db2start
07/09/2010 14:24:36???? 0?? 0?? SQL1063N? DB2START processing was successful.
SQL1063N? DB2START processing was successful.

連接到數(shù)據(jù)庫(kù)
[db2inst1@dcm ~]$ db2 connect to sample

?? Database Connection Information

?Database server??????? = DB2/LINUX 9.7.1
?SQL authorization ID?? = DB2INST1
?Local database alias?? = SAMPLE

執(zhí)行SQL
[db2inst1@dcm ~]$ db2
db2 => select * from staff where dept=20

ID???? NAME????? DEPT?? JOB?? YEARS? SALARY??? COMM??? ?
------ --------- ------ ----- ------ --------- ---------
??? 10 Sanders?????? 20 Mgr??????? 7? 98357.50???????? -
??? 20 Pernal??????? 20 Sales????? 8? 78171.25??? 612.45
??? 80 James???????? 20 Clerk????? -? 43504.60??? 128.20
?? 190 Sneider?????? 20 Clerk????? 8? 34252.75??? 126.50

? 4 record(s) selected.

退出
db2 => quit
DB20000I? The QUIT command completed successfully.

斷開(kāi)連接（不斷開(kāi)就不能db2stop）
[db2inst1@dcm ~]$ db2 connect reset
DB20000I? The SQL command completed successfully.

關(guān)閉實(shí)例
[db2inst1@dcm ~]$ db2stop
07/09/2010 14:29:32???? 0?? 0?? SQL1064N? DB2STOP processing was successful.
SQL1064N? DB2STOP processing was successful.