公司兩年前上的系統(tǒng),當(dāng)時要用12c的新特性,就上線投產(chǎn)了。初始o(jì)racle版本為12.1,該版本在實際使用中bug不斷,簡直頭疼。近日開發(fā)投產(chǎn)一些新的應(yīng)用服務(wù)器大概20多臺,在投產(chǎn)至10臺的時候,數(shù)據(jù)庫內(nèi)部鏈接在910的時候,就會報錯,但是我們的session數(shù)很大,遠(yuǎn)遠(yuǎn)沒有到達(dá)臨界值,具體報錯如下所示;
為元謀等地區(qū)用戶提供了全套網(wǎng)頁設(shè)計制作服務(wù),及元謀網(wǎng)站建設(shè)行業(yè)解決方案。主營業(yè)務(wù)為成都網(wǎng)站建設(shè)、成都網(wǎng)站制作、元謀網(wǎng)站設(shè)計,以傳統(tǒng)方式定制建設(shè)網(wǎng)站,并提供域名空間備案等一條龍服務(wù),秉承以專業(yè)、用心的態(tài)度為用戶提供真誠的服務(wù)。我們深信只要達(dá)到每一位用戶的要求,就會得到認(rèn)可,從而選擇與我們長期合作。這樣,我們也可以走得更遠(yuǎn)!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
通過MOS賬戶查詢;Ora-12518 on Oracle 12c Multitenant Architecture (文檔 ID 2252001.1)
Ora-12518 on Oracle 12c Multitenant Architecture (文檔 ID 2252001.1)
SYMPTOMS
When attempting to connect to PDB via listener,
the following error occurs.
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.
比較適用我們的場景,原來的監(jiān)聽配置文件為;
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)
)
)
后將監(jiān)聽修改為;
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)
)
)
)
和開發(fā)人員逐個上應(yīng)用服務(wù)器,并投產(chǎn),觀察連接數(shù)和監(jiān)聽日志,并沒有出現(xiàn),鏈接至910的時候瘋狂報錯現(xiàn)象;
SQL> /
SESSIONS_CURRENT SESSIONS_HIGHWATER
1202 1456
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