Oracle学习笔记之第六节网络介绍及配置,会话
ps aux | grep ora_pmon 有几个数据库服务器就有几个这个进程（进程监控进程和外部打交道）
vim sqlnet.ora 这个可以让数据库略微安全，让sqlplus 不能登陆
sqlnet.authentication_services=(none)
conn hr/oracle_4U@orcl 产生物理连接逻辑会话
host ps 查看终端是哪个
！ ps
然后通过windows的sqlplus plus 工具连接
select * from v_$session s where s.TERMINAL ='pts/2';
SADDR 会话地址 SGA共享池，控制新值的存放
PADDR 内存地址
TADDR 事物地址，旧值地址，如果更改就产生事物，也在共享池
这时候lsnrctl stop
select salary from employes; 还是连着的，但是进行一个新的连接就发现连不上了
lsnrctl
help
srvctl status listener
crs_stat -p | grep lsnr
crs_unregister ora.LISTENER.lsnr
srvctl add listener -p 15210 手动增加监听器
crsctl stop has 关闭整个集群
emctl start dbconsole 启动图形页面
emca 重新生成图形页面
emca -deconfig dbcontrol db -repos drop
emca -config dbcontrol db -repos create
配置第2个监听器
vim listener.ora
srvctl add listener -l l2 -p 15211
srvctl start listener -l l2
lsnrctl services l2
vim tnsnames.ora
sqlplus /nolog
alter system register; 强制系统去动态注册一下
动态注册远程开不了数据库
FOR15212 =
(DESCRIPTION =
(ADDRESS_LIST=
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.55)(PORT = 15212))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.55)(PORT = 15211))
))
conn hr/oracle_4U@192.168.0.55:15212/orcl.example.com 简单连接
shutdown abort强制关闭数据库
export LANG=en_US
netmgr 图形配置网络页面
netca
vim tnsnames.ora
conn hr/oracle_4U@192.168.0.55:TIGER/rcat.example.com
TIGER 负载均衡配置
让两个监听器认识lsnrctl services D000......
vim listener.ora
#动态注册LISTENER监听器
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15212))
)
)
#动态注册L2监听器
L2=
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15213))
)
)
#使监听器LISTENER静态注册,使其能够与上面的监听器进行一动一静
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME= rcat.example.com)
(SID_NAME= rcat)
(ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1/
)
)
)
使监听器L2静态注册,使其能够与上面的监听器进行一动一静
SID_LIST_L2 =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME= rcat.example.com)
(SID_NAME= rcat)
(ORACLE_HOME= /u01/app/oracle/product/11.2.0/dbhome_1/
)
)
)
vim tnsnames.ora
#tnsnames.ora所在的那台客户端认为在15212能找到注册服务，若不能找到就连不上。
RCAT =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15212))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = rcat.example.com)
)
)
#tnsnames.ora所在的那台客户端认为在15212能找到注册服务，若不能找到就连不上。
RCAT2
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15213))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = rcat.example.com)
)
)
#动态注册FOR15212
FOR15212 =
(DESCRIPTION =
(ADDRESS_LIST=
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15212))
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15213))
)
)
#tiger是给win客户端写的条目,负载均衡静态15212和15213这两个监听端口
TIGER =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15212))
(ADDRESS = (PROTOCOL = TCP)(HOST = station90.example.com)(PORT = 15213))
(LOAD_BALANCE = yes )
)
(CONNECT_DATA =
(SERVICE_NAME = rcat.example.com)
)
)
#以上需要使其动态注册生效，需要进sqlplus修改配置
. oraenv
rcat
sqlplus /nolog
conn /as sysdba
alter system set local_listener=FOR15212;
alter register; #更快的让监听器动态注册，不然得等待2分钟以上
. oraenv
+ASM
sqplus /nolog
conn /as sysdba
alter system set local_listener=FOR15212;
#以上需要使其动态注册生效，需要进sqlplus修改配置
. oraenv
rcat
sqlplus /nolog
conn /as sysdba
alter system set local_listener=FOR15212;
alter system register; #更快的让监听器动态注册，不然得等待2分钟以上
. oraenv
+ASM
sqplus /nolog
conn /as sysdba
alter system set local_listener=FOR15212;
alter system register; #更快的让监听器动态注册，不然得等待2分钟以上
#更快的让监听器动态注册，不然得等待2分钟以上
以上结束后查看LISTENER监听器状态
[oracle@station90 admin]$ lsnrctl services LISTENER;
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 05-SEP-2016 23:16:52
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=station90.example.com)(PORT=15212)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM", status READY, has 1 handler(s) for this service... #是动态注册出现的
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
Service "rcat.example.com" has 2 instance(s).
Instance "rcat", status UNKNOWN, has 1 handler(s) for this service... #是静态注册出现的
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Instance "rcat", status READY, has 1 handler(s) for this service... #是动态注册出现的
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
Service "rcatXDB.example.com" has 1 instance(s). #是动态注册出现的隐含服务，XMLDB
Instance "rcat", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
DISPATCHER
(ADDRESS=(PROTOCOL=tcp)(HOST=station90.example.com)(PORT=44903))
The command completed successfully
L2监听器的状态
[oracle@station90 admin]$ lsnrctl services l2
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 05-SEP-2016 23:19:08
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=station90.example.com)(PORT=15213)))
Services Summary...
Service "rcat.example.com" has 2 instance(s).
Instance "rcat", status UNKNOWN, has 1 handler(s) for this service... #是静态注册出现的
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Instance "rcat", status READY, has 1 handler(s) for this service... #是动态注册出现的
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
LOCAL SERVER
Service "rcatXDB.example.com" has 1 instance(s).
Instance "rcat", status READY, has 1 handler(s) for this service... #是动态注册出现的隐含服务，XMLDB
Handler(s):
"D000" established:0 refused:0 current:0 max:1022 state:ready
#D000是受到这个参数影响 sqlplus alter system set dispatchers='(PROTOCOL=TCP) (dispatchers=3)';
DISPATCHER
(ADDRESS=(PROTOCOL=tcp)(HOST=station90.example.com)(PORT=44903))
The command completed successfully
小提示:crossdver软件可以让WINDOWNS程序装在linux上
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