【原创】TimeSten安装与配置

1.安装TimeSten

2.安装时要指定TNS_ADMIN_LOCATION，即tnsnames.ora的路径，因为tt会根据这个连接Oracle。C:TimesTen t1122_32 etworkadmin，要具体到目录而非文件。

配置过程：

注意事项：

1.Oracle和TimeSten之间同步的用户名必须一致，也就是Cache Manager用户名必须相同。

2.Oracle和TimeSten的数据库编码方式必须一致，否则会关联失败。

3.Oracle版本和TimeSten版本必须一致，否则有可能出现数据类型影射失败的情况。

4.在定义CacheGroup时，TimeSten会根据CacheGroup中的Cache Table去Oracle的Cache Table中寻找、对比，因此，如果要将某个表加入Cache Group，必须在Oracle和TimeSten中都定义才可以，而且定义必须一致，而且这两个用户必须一致。

5.对于Blob类型的定义，blob会影射为varbinary：

在Oracle创建表：

CREATE TABLE t (
  i INT NOT NULL PRIMARY KEY
  , c CLOB
  , b BLOB
  , nc NCLOB);

然后在TimeSten中定义CacheGroup：

CREATE DYNAMIC ASYNCHRONOUS WRITETHROUGH CACHE GROUP cg1 
  FROM t
 (i INT NOT NULL PRIMARY KEY
  , c VARCHAR2(4194304 BYTE)
  , b VARBINARY(4194304)
  , nc NVARCHAR2(2097152)
  );

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3.先新建一个Cache Manager用户：

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C:Documents and Settingszhangxsh.ETHER>ttisql

Type ? or "help" for help, type "exit" to quit ttIsql.

Command> connect cache_session;

Connection successful: DSN=cache_session;UID=zhangxsh;

(Default setting AutoCommit=1)

Command> create user cacheadmin identified by cacheadm in;

User created.

Command> grant admin to cacheadm;

15151: GRANT failed: User CACHEADM does not exist

The command failed.

Command> grant admin to cacheadmin;

Command>

------------------------------------------------------------------

4.再新建一个Cache Table User

-------------------------------------------------------------------------------

Command> create user cache identified by cache;

User created.

Command> grant create session to cache;

Command>

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5.Associate the Oracle Cache Administration user with the Cache Database（互相关联）

Command> connect "dsn=session_cache;uid=cacheadmin;oraclepwd=cacheadmin";

Enter password for 'cacheadmin':

Connection successful: DSN=session_cache;UID=cacheadmin;DataStore=C:Times

(Default setting AutoCommit=1)

con1: Command> call ttcacheuidpwdset ('cacheadmin','cacheadmin');

con1: Command>

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6.Create a Cache Grid

con1: Command> call ttcacheuidpwdset ('cacheadmin','cacheadmin');

con1: Command> call ttcacheuidget;

< CACHEADMIN >

1 row found.

con1: Command> call ttgridcreate ('samplegrid');

con1: Command> call ttgridinfo;

< SAMPLEGRID, CACHEADMIN, NT, 32-bit, 11, 2, 2 >

1 row found.

con1: Command>

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7.Associate the Cache Database with the Cache Grid

call ttgridnameset ('samplegrid');

======================================================================

将CacheGroup加入CacheDatabase

connect "dsn=cachedb1_1122;uid=cacheadm;pwd=cacheadm;oraclepwd=cacheadm";

call ttcachestart;

在Oracle中创建表：

-----------------------------------------------------------------------------------

-- Create table

create table T_SESSION

(

C_SID VARCHAR2(200) primary key ,

C_SESSION BLOB

)

tablespace USERS

pctfree 10

initrans 1

maxtrans 255

storage

(

initial 64

minextents 1

maxextents unlimited

);

-- Grant/Revoke object privileges

grant select, insert, update, delete on T_SESSION to CACHEADMIN;

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然后建立以下CacheGroup:

create [dynamic] asynchronous writethrough cache group g_awt from zhangxsh.t_session ( c_sid varchar(200) not null , c_session varbinary(262144),primary key(c_sid));

create dynamic asynchronous writethrough cache group g_awt from uss.t_session ( c_sid varchar(200) not null , c_session varbinary(262144),primary key(c_sid));

create dynamic asynchronous writethrough cache group g_awt from uss.t_session ( c_sid varchar(200) not null , c_session varbinary(262144),d_create timestamp,primary key(c_sid)) AGING USE timestamp LIFETIME 15 minutes CYCLE 5 seconds ON;

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要启用自动回写：

call ttRepStart;--启用回写Agent

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启用时间失效机制（Defining Cache Groups一节中有介绍）：

每隔60秒检查when_placed截止现在超过45天的记录并删除。

CREATE ASYNCHRONOUS WRITETHROUGH CACHE GROUP ordered_items
FROM oratt.orders
 (ord_num      NUMBER(10) NOT NULL,
  cust_num     NUMBER(6) NOT NULL,
  when_placed  DATE NOT NULL,
  when_shipped DATE NOT NULL,
  PRIMARY KEY(ord_num))
AGING USE when_placed LIFETIME 45 DAYS CYCLE 60 MINUTES ON,
oratt.order_item
 (orditem_id NUMBER(12) NOT NULL,
  ord_num    NUMBER(10),
  prod_num   VARCHAR2(6),
  quantity   NUMBER(3),
  PRIMARY KEY(orditem_id),
  FOREIGN KEY(ord_num) REFERENCES oratt.orders(ord_num));