12C数据库之坑爹又坑队友的无故链接不上问题处理-创新互联

公司两年前上的系统,当时要用12c的新特性,就上线投产了。初始oracle版本为12.1,该版本在实际使用中bug不断,简直头疼。近日开发投产一些新的应用服务器大概20多台,在投产至10台的时候,数据库内部链接在910的时候,就会报错,但是我们的session数很大,远远没有到达临界值,具体报错如下所示;

为元谋等地区用户提供了全套网页设计制作服务,及元谋网站建设行业解决方案。主营业务为成都网站建设、成都网站制作、元谋网站设计,以传统方式定制建设网站,并提供域名空间备案等一条龙服务,秉承以专业、用心的态度为用户提供真诚的服务。我们深信只要达到每一位用户的要求,就会得到认可,从而选择与我们长期合作。这样,我们也可以走得更远!

TNS-12518: TNS:listener could not hand off client connection
TNS-12536: TNS:operation would block
TNS-12560: TNS:protocol adapter error
TNS-00506: Operation would block
Linux Error: 11: Resource temporarily unavailable

通过MOS账户查询;Ora-12518 on Oracle 12c Multitenant Architecture (文档 ID 2252001.1)

Ora-12518 on Oracle 12c Multitenant Architecture (文档 ID 2252001.1)

SYMPTOMS
When attempting to connect to PDB via listener,
the following error occurs.

ERROR

ORA-12518: TNS:listener could not hand off client connection

Listener log:

=======

03-APR-2017 08:57:31 (CONNECT_DATA=(SID=wd1)(CID=(PROGRAM=d:\orasfw\prd1\bin\sqlplus.exe)(HOST=Host name )(USER=ismeirb))) (ADDRESS=(PROTOCOL=tcp)(HOST=XX.XX.XX.XX)(PORT=63994)) establish wd1 * 12518

TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
64-bit Windows Error: 203: Unknown error

CAUSE
PDB SiD name was not properly configured in the listener.ora file

SID_LIST_LSNRPD =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ct1)
(ORACLE_HOME = d:\orasfw\prd1)
(SID_NAME = ct1) <<<< CDB Instance_name
)
(SID_DESC =
(GLOBAL_DBNAME = wd1)
(ORACLE_HOME = d:\orasfw\prd1)
(SID_NAME = wd1) <<<<< Suppose to be CDB instance_name but PDB Instance_name has been configured
)
)

SOLUTION
PDB instance_name 'wd1' will always exists within in the CDB instance_name 'ct1'. Configure the SID for PDB service name wd1 has shown below.

SID_LIST_LSNRPD =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = ct1)
(ORACLE_HOME = d:\orasfw\prd1)
(SID_NAME = ct1)
)
(SID_DESC =
(GLOBAL_DBNAME = wd1) <<<< PDB Instance_name
(ORACLE_HOME = d:\orasfw\prd1)
(SID_NAME = ct1) <<<< CDB Instance_name
)
)

After adding the SID WD1 the connections to PDB worked fine.

比较适用我们的场景,原来的监听配置文件为;

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME =salesdb)
(ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1)
(SID_NAME = salesdb)
)
(SID_DESC =
(GLOBAL_DBNAME =salesstdydb)
(ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1)
(SID_NAME = salesstdydb)
)
(SID_DESC =
(GLOBAL_DBNAME =salesdb_DGMGRL)
(ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1)
(SID_NAME = salesdb)
)
)

后将监听修改为;
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME =salesdb)
(ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1)
(SID_NAME = salesdb)
)
(SID_DESC =
(GLOBAL_DBNAME =salesstdydb)
(ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1)
(SID_NAME = salesstdydb)
)
(SID_DESC =
(GLOBAL_DBNAME =salesdb_DGMGRL)
(ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1)
(SID_NAME = salesdb)
(SID_DESC =
(GLOBAL_DBNAME =salespdb)
(ORACLE_HOME=/u01/app/oracle/product/12.2.0.1/db_1)
(SID_NAME = salesdb)
)
)
)

和开发人员逐个上应用服务器,并投产,观察连接数和监听日志,并没有出现,链接至910的时候疯狂报错现象;

SQL> /

SESSIONS_CURRENT SESSIONS_HIGHWATER


        1202               1456

另外有需要云服务器可以了解下创新互联cdcxhl.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。

网站标题:12C数据库之坑爹又坑队友的无故链接不上问题处理-创新互联
分享链接:https://www.cdcxhl.com/article42/coihec.html

成都网站建设公司_创新互联,为您提供小程序开发做网站手机网站建设网站收录网站设计公司品牌网站制作

广告

声明:本网站发布的内容(图片、视频和文字)以用户投稿、用户转载内容为主,如果涉及侵权请尽快告知,我们将会在第一时间删除。文章观点不代表本网站立场,如需处理请联系客服。电话:028-86922220;邮箱:631063699@qq.com。内容未经允许不得转载,或转载时需注明来源: 创新互联

h5响应式网站建设