- 确认oracle中基础表jobs
[timesten@XAG816 ~]$ sqlplus ttuser/oracle@DG
SQL> desc jobs;
Name Null? Type
----------------------------------------- -------- ----------------------------
JOB_ID NOT NULL VARCHAR2(10)
JOB_TITLE NOT NULL VARCHAR2(35)
MIN_SALARY NUMBER(6)
MAX_SALARY NUMBER(6)
SQL> select count(1) from jobs;
COUNT(1)
----------
19
- 将基础表的读取权限赋予oracle的缓存管理用户
SQL> grant select on jobs to cacheadm;
- 使用缓存管理用户登录TimesTen，启动缓存代理并建立缓存组
[timesten@XAG816 oraclescripts]$
ttisql -connstr "dsn=cachedb1_1122; uid = cacheadm; pwd = timesten; oraclepwd = oracle" -e 'set prompt "CACHEADM>"'
#启动缓存代理
CACHEADM>call ttcachestart;
[timesten@XAG816 ~]$ ttAdmin -query cachedb1_1122 | grep Started
Replication Manually Started : False
Cache Agent Manually Started : True
#建立缓存组
CACHEADM>
create readonly cache group "ro"
autorefresh mode incremental interval 5 seconds
state on
from
"ttuser"."jobs"
(
"job_id" VARCHAR2(10 byte) not null,
"job_title" VARCHAR2(35 byte) not null,
"min_salary" NUMBER(6),
"max_salary" NUMBER(6),
primary key("job_id")
);
CACHEADM>cachegroups;
Cache Group CACHEADM.RO:
Cache Group Type: Read Only
Autorefresh: Yes
Autorefresh Mode: Incremental
Autorefresh State: On
Autorefresh Interval: 5 Seconds
Autorefresh Status: ok
Aging: No aging defined
Root Table: TTUSER.JOBS
Table Type: Read Only
1 cache group found.
#查询缓存表的数据
[timesten@XAG816 ~]$
ttisql -connstr "dsn=cachedb1_1122; uid = ttuser;pwd = timesten" -e 'set prompt "TTUSER>"'
TTUSER>select count(1) from jobs;
< 19 >
1 row found.
#验证只读缓存表的数据不允许修改
TTUSER>delete from jobs;
8225: Table JOBS is read only
The command failed.
4.在oracle 端做测试数据验证
[oracle@XAG142 ~]$ sqlplus ttuser/oracle@DG
SQL> set autocommit on;
SQL> insert into jobs values('SA_EA','Enterprise Architect',10000,20000);
1 row created.
Commit complete.
TTUSER>select * from jobs where job_id='SA_EA';
< SA_EA, Enterprise Architect, 10000, 20000 >
SQL> update jobs set min_salary=12000 where job_id='SA_EA';
1 row updated.
Commit complete.
TTUSER>select * from jobs where job_id='SA_EA';
< SA_EA, Enterprise Architect, 12000, 20000 >
SQL> delete from jobs where job_id='SA_EA';
1 row deleted.
Commit complete.
SQL> set autocommit off;
TTUSER>select * from jobs where job_id='SA_EA';
0 rows found.
- 测试Unload
SQL> select job_id,min_salary from jobs where min_salary > 10000;
JOB_ID MIN_SALARY
------------------------------ ----------
AD_PRES 20000
AD_VP 15000
TTUSER>select job_id,min_salary from jobs where min_salary > 10000;
< AD_PRES, 20000 >
< AD_VP, 15000 >
2 rows found.
CACHEADM>unload cache group ro where min_salary > 10000;
2 cache instances affected.
TTUSER>select job_id,min_salary from jobs where min_salary > 10000;
0 rows found.
- 测试Refresh (必须先将 autorefresh 状态设为 Paused)
#说明 手动Refresh 不能带where 条件
CACHEADM>alter cache group ro set autorefresh state paused;
CACHEADM>refresh cache group ro commit every 256 rows;
19 cache instances affected.
TTUSER>select job_id,min_salary from jobs where min_salary > 10000;
< AD_PRES, 20000 >
< AD_VP, 15000 >
2 rows found.
- 测试Load (预加载只读缓存组load操作有如下条件，动态加载如此条件)
1:必须先将 autorefresh 状态设为 Paused,
2:缓存组必须为空，
3:load操作不允许带where条件
CACHEADM>unload cache group ro;
19 cache instances affected.
TTUSER>select job_id,min_salary from jobs;
0 rows found.
CACHEADM>alter cache group ro set autorefresh state paused;
CACHEADM>load cache group ro commit every 256 rows;
19 cache instances affected.
TTUSER>select job_id,min_salary from jobs where min_salary > 10000;
< AD_PRES, 20000 >
< AD_VP, 15000 >
2 rows found.
7.1 测试Load (不符合3条件时的报错信息)
[timesten@XAG816 ~]$ ttAdmin -query cachedb1_1122 | grep Started
Replication Manually Started : False
Cache Agent Manually Started : False
[timesten@XAG816 ~]$ ttAdmin -cacheStart cachedb1_1122
*** [TimesTen][TimesTen 11.2.2.8.47 ODBC Driver][TimesTen]TT20100: This connection required recovery due to an improper shutdown -- file "db.c", lineno 12986, procedure "sbDbConnect"
*** ODBC Warning = 01000, TimesTen Warning = 20100
RAM Residence Policy : inUse
Replication Agent Policy : manual
Replication Manually Started : False
Cache Agent Policy : manual
Cache Agent Manually Started : True
[timesten@XAG816 ~]$ ttAdmin -query cachedb1_1122 | grep Started
Replication Manually Started : False
Cache Agent Manually Started : True
CACHEADM>cachegroups ro;
Cache Group CACHEADM.RO:
Cache Group Type: Read Only
Autorefresh: Yes
Autorefresh Mode: Incremental
Autorefresh State: On
Autorefresh Interval: 5 Seconds
Autorefresh Status: ok
Aging: No aging defined
Root Table: TTUSER.JOBS
Table Type: Read Only
1 cache group found.
CACHEADM>alter cache group ro set autorefresh state paused;
CACHEADM>cachegroups ro;
-------------------------------------
Cache Group CACHEADM.RO:
Cache Group Type: Read Only
Autorefresh: Yes
Autorefresh Mode: Incremental
Autorefresh State: Paused
Autorefresh Interval: 5 Seconds
Autorefresh Status: ok
Aging: No aging defined
Root Table: TTUSER.JOBS
Table Type: Read Only
1 cache group found
------------------------------------------
CACHEADM>load cache group ro commit every 256 rows;
8288: Manual LOAD of cache group CACHEADM.RO is not allowed because it is specified as AUTOREFRESH and it is not empty
The command failed.
CACHEADM>unload cache group ro;
19 cache instances affected.
CACHEADM>load cache group ro where min_salary > 10000 commit every 256 rows;
8287: Manual LOAD/REFRESH operations with WHERE or WITHID clauses are not allowed on cache group CACHEADM.RO because it is specified as AUTOREFRESH
The command failed.
CACHEADM>load cache group ro commit every 256 rows;
19 cache instances affected.
- 删除缓存组(相应的缓存表也一并删除)
CACHEADM>drop cache group ro;
TTUSER>select * from jobs;
2206: Table TTUSER.JOBS not found
The command failed.