说Oracle的MTS
1、在Oracle Server调整为MTS方式后,一些客户端出现了连不上Oracle Server的状况,大部分报的错为TNS-12509,如何解决? 回答: 在实际过程中是存在着这方面的情况,我总结了一下,大部是由Oracle8 的client引起的,就是那些配服务名还得挂着个.world的那种客户端
1、在Oracle Server调整为MTS方式后,一些客户端出现了连不上Oracle Server的状况,大部分报的错为TNS-12509,如何解决?
回答:
在实际过程中是存在着这方面的情况,我总结了一下,大部是由Oracle8 的client引起的,就是那些配服务名还得挂着个.world的那种客户端,其实解决起来很简单,只需要把tnsname.ora这个文件中你的那个服务名配置的"sid="改成"service_name=",这就Ok了。
2、我使用了成都迈普公司的"隧道网关"这种产品,以前在dedicated方式是好好的,可是改成MTS后,为什么Client死活连不是Oracle的Server呢?
回答:
其实我们公司也用了这种产品,在MTS应用之初也遇到了这个问题。出现这个问题的原因为迈普的这种产品只为监测静态的端返回,它认为Oracle的监听端口即为返回端口,实际在MTS中不是这样的,多进行几次连接,用netstat -n在客户端观看一下就会明白,MTS返回的端口是动态的,所以迈普的这个产品就不好用了。解燃眉之急的办法可以这样:在MTS客户端配置"服务名"时,请求个Dedicate的连接,即使用SERVER = DEDICATED选项,这就把问题解决了。
3、如何跟踪一下MTS的dispatcher和shared server进程?
回答:
这需用到诊断事件了,dispatcher的诊断事件号为10248,shared server的为10249,如下以shared server为例简单说一下,假定s015的操作系统的进程号为13161.
sql>conn sys/pass as sysdba
sql>oradebug setospid 13161
sql>oradebug TRACEFILE_NAME --看一下跟踪文件的名称
sql>oradebug EVENT 10249 trace name context forever, level 10
也可以在init
event="10248 trace name context forever, level X" -- dispatchers
event="10249 trace name context forever, level X" -- shared servers
4、如何在MTS中设置IPC
回答:
如下的配置样例来自Metalink
LISTENER.ORA:
=============
LISTENER=
(ADDRESS_LIST=
(ADDRESS=
(PROTOCOL=IPC)
(KEY=
)
(ADDRESS=
(PROTOCOL=IPC)
(KEY=
)
)
CONNECT_TIMEOUT_LISTENER=10
STARTUP_WAIT_TIME_LISTENER=0
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(SID_NAME=
(ORACLE_HOME=
)
)
地址列表中可以使用其它的协议,加入应的地址。这个例子完全是一个IPC的例子
TNSNAMES.ORA:
=============
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=IPC)
(KEY=
)
(CONNECT_DATA=
(SID=
)
)
INIT.ORA entries for MTS:
=========================
MTS_DISPATCHERS="IPC,2"
MTS_SERVERS=1
MTS_MAX_DISPATCHERS=6
MTS_MAX_SERVERS=3
MTS_SERVICE=
MTS_LISTENER_ADDRESS="(ADDRESS=(PROTOCOL=IPC)(KEY=

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