下面的步驟詳細的說明了在Oracle 11gR2 RAC Database環境下使用emca配置叢集dbconsole遇到的部分問題及解決的方法。

1.資料庫環境。

Oracle Exadata Machine x4-2
Oracle RAC Database 11.2.0.4.6 for Linux x86_64bit
[root@dm01db01 ~]# uname -r
2.6.39-400.126.1.el5uek

2.使用EMCA建立EM。

[root@dm01db01 ~]# su - oracle
[oracle@dm01db01 ~]$ emca -config dbcontrol db -repos create -cluster
......
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
......
收到ORA-12514報錯。

emca工具輸出的日誌被存放在$GRID_BASE/cfgtoollogs/emca目錄下。

檢視/u01/app/grid/cfgtoollogs/emca/emca_2014_06_18_10_26_50.log日誌：
......
Jun 18, 2014 10:27:17 AM oracle.sysman.emcp.util.GeneralUtil initSQLEngineRemotely
CONFIG: SQLEngine connecting with Service Name: +ASM, oracleHome: /u01/app/11.2.0.4/grid, and user: ASMSNMP scan name: dm01-scan scan port: 1521
Jun 18, 2014 10:27:17 AM oracle.sysman.emcp.util.GeneralUtil initSQLEngineRemotely
WARNING: Error during db connection : ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

Jun 18, 2014 10:27:17 AM oracle.sysman.emcp.util.GeneralUtil initSQLEngineRemotely
CONFIG: Waiting for 5 second before reconnection
Jun 18, 2014 10:27:22 AM oracle.sysman.emcp.util.GeneralUtil initSQLEngineRemotely
CONFIG: SQLEngine connecting with Service Name: +ASM, oracleHome: /u01/app/11.2.0.4/grid, and user: ASMSNMP host: dm01db02 port: 1521
Jun 18, 2014 10:27:22 AM oracle.sysman.emcp.util.GeneralUtil initSQLEngineRemotely
CONFIG: SQLEngine created successfully and connected
Jun 18, 2014 10:27:22 AM oracle.sysman.emcp.ParamsManager setParam
CONFIG: Setting param: CONFIRMATION ANSWER value:
Jun 18, 2014 10:27:28 AM oracle.sysman.emcp.ParamsManager setParam
CONFIG: Setting param: CONFIRMATION ANSWER value: no

從最後面的日誌可以看出，報ORA-12514錯誤的原因是不能透過SCAN LISTENER連線到ASM例項，說明ASM例項沒有向SCAN LISTENER動態註冊。

3.ASM例項向SCAN LISTENER動態註冊。

[root@dm01db01 ~]# su - grid
[grid@dm01db01 ~]$ sqlplus / as sysasm

SQL*Plus: Release 11.2.0.4.0 Production on Wed Jun 18 23:18:09 2014

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options

SQL> show parameter spfile

NAME TYPE
------------------------------------ ---------------------------------
VALUE
------------------------------
spfile string
+DBFS_DG/cluster-clu1/asmparam
eterfile/registry.253.84996746
5
SQL> show parameter remote

NAME TYPE
------------------------------------ ---------------------------------
VALUE
------------------------------
remote_listener string

remote_login_passwordfile string
EXCLUSIVE
remote_os_authent boolean
FALSE
remote_os_roles boolean
FALSE
SQL> alter system set remote_listener='dm01-scan:1521';

System altered.

SQL> alter system register;

System altered.

SQL> show parameter remote_listener

NAME TYPE
------------------------------------ ---------------------------------
VALUE
------------------------------
remote_listener string
dm01-scan:1521
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
[grid@dm01db01 ~]$ lsnrctl status listener_scan1

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 18-JUN-2014 23:19:09

Copyright (c) 1991, 2013, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
------------------------
Alias LISTENER_SCAN1
Version TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date 17-JUN-2014 12:25:14
Uptime 1 days 10 hr. 53 min. 55 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/11.2.0.4/grid/network/admin/listener.ora
Listener Log File /u01/app/11.2.0.4/grid/log/diag/tnslsnr/dm01db01/listener_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.0.3.16)(PORT=1521)))
Services Summary...
Service "+ASM" has 2 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Instance "+ASM2", status READY, has 1 handler(s) for this service...
Service "tequdb" has 2 instance(s).
Instance "tequdb1", status READY, has 1 handler(s) for this service...
Instance "tequdb2", status READY, has 1 handler(s) for this service...
The command completed successfully

4.再次使用EMCA建立EM。

[root@dm01db01 ~]# su - oracle
[oracle@dm01db01 ~]$ emca -config dbcontrol db -repos create -cluster

STARTED EMCA at Jun 18, 2014 11:19:44 PM
EM Configuration Assistant, Version 11.2.0.3.0 Production
Copyright (c) 2003, 2011, Oracle. All rights reserved.

Enter the following information:
Database unique name: tequdb
Service name: tequdb
Listener port number: 1521
Listener ORACLE_HOME [ /u01/app/11.2.0.4/grid ]:
Password for SYS user:
Password for DBSNMP user:
Password for SYSMAN user:
Cluster name: cluster-clu1
Email address for notifications (optional):
Outgoing Mail (SMTP) server for notifications (optional):
ASM ORACLE_HOME [ /u01/app/11.2.0.4/grid ]:
ASM port [ 1521 ]:
ASM username [ ASMSNMP ]:
ASM user password:
-----------------------------------------------------------------

You have specified the following settings

Database ORACLE_HOME ................ /u01/app/oracle/product/11.2.0.4/dbhome_1

Database instance hostname ................ Listener ORACLE_HOME ................ /u01/app/11.2.0.4/grid
Listener port number ................ 1521
Cluster name ................ cluster-clu1
Database unique name ................ tequdb
Email address for notifications ...............
Outgoing Mail (SMTP) server for notifications ...............
ASM ORACLE_HOME ................ /u01/app/11.2.0.4/grid
ASM port ................ 1521
ASM user role ................ SYSDBA
ASM username ................ ASMSNMP

-----------------------------------------------------------------
Do you wish to continue? [yes(Y)/no(N)]: y
Jun 18, 2014 11:20:26 PM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /u01/app/oracle/cfgtoollogs/emca/tequdb/emca_2014_06_18_23_19_44.log.
Jun 18, 2014 11:20:40 PM oracle.sysman.emcp.EMReposConfig createRepository
INFO: Creating the EM repository (this may take a while) ...
Jun 18, 2014 11:20:40 PM oracle.sysman.emcp.EMReposConfig createRepository
WARNING: ORA-28003: password verification for the specified password failed
ORA-20006: Password too simple

Jun 18, 2014 11:20:40 PM oracle.sysman.emcp.EMReposConfig invoke
SEVERE: Error creating the repository
Jun 18, 2014 11:20:40 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Refer to the log file at /u01/app/oracle/cfgtoollogs/emca/tequdb/emca_repos_create_<date>.log for more details.
Jun 18, 2014 11:20:40 PM oracle.sysman.emcp.EMConfig perform
SEVERE: Error creating the repository
Refer to the log file at /u01/app/oracle/cfgtoollogs/emca/tequdb/emca_2014_06_18_23_19_44.log for more details.
Could not complete the configuration. Refer to the log file at /u01/app/oracle/cfgtoollogs/emca/tequdb/emca_2014_06_18_23_19_44.log for more details.

這個告警參考如下MOS文章：

EMCA: RepManager Fails With Password Verification Error ORA-28003 (文件 ID 779098.1)
修改時間:2013-10-23

型別:PROBLEM

In this Document

Symptoms

Cause

Solution

References

This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process and therefore has not been subject to an independent technical review.

APPLIES TO:

Enterprise Manager Base Platform - Version 10.2.0.1 to 10.2.0.5 [Release 10.2]
Information in this document applies to any platform.
Checked for relevance on 22-Oct-2013

SYMPTOMS

While using EMCA to create DB Console repository, this fails with:

	CONFIG: ORA-28003: password verification for the specified password failed

ORA-20003: Password should contain at least one \

CAUSE

This is treated in internal BUG 4195090.

SOLUTION

a) Disable the Password verification
b) Create the Repository
c) Enable the password verification.

Note: For disabling the password verification function, Note 114930.1 can be used. For example:

	SQL> alter profile default limit password_verify_function null;

5.禁用密碼驗證函式。

[root@dm01db01 ~]# su - oracle
[oracle@dm01db01 ~]$ sql

SQL*Plus: Release 11.2.0.4.0 Production on Wed Jun 18 23:29:28 2014

Copyright (c) 1982, 2013, Oracle. All rights reserved.

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

SQL> set linesize 200
SQL> set pagesize 200
SQL> select * from dba_profiles where profile='DEFAULT';

PROFILE RESOURCE_NAME RESOURCE LIMIT
------------------------------ -------------------------------- -------- ----------------------------------------
DEFAULT COMPOSITE_LIMIT KERNEL UNLIMITED
DEFAULT SESSIONS_PER_USER KERNEL UNLIMITED
DEFAULT CPU_PER_SESSION KERNEL UNLIMITED
DEFAULT CPU_PER_CALL KERNEL UNLIMITED
DEFAULT LOGICAL_READS_PER_SESSION KERNEL UNLIMITED
DEFAULT LOGICAL_READS_PER_CALL KERNEL UNLIMITED
DEFAULT IDLE_TIME KERNEL UNLIMITED
DEFAULT CONNECT_TIME KERNEL UNLIMITED
DEFAULT PRIVATE_SGA KERNEL UNLIMITED
DEFAULT FAILED_LOGIN_ATTEMPTS PASSWORD 10
DEFAULT PASSWORD_LIFE_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_REUSE_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_REUSE_MAX PASSWORD UNLIMITED
DEFAULT PASSWORD_VERIFY_FUNCTION PASSWORD VERIFY_FUNCTION_11G
DEFAULT PASSWORD_LOCK_TIME PASSWORD 1
DEFAULT PASSWORD_GRACE_TIME PASSWORD 7

16 rows selected.

SQL> alter profile default limit password_verify_function null;

Profile altered.

6.使用EMCA建立EM。

[oracle@dm01db01 ~]$ emca -config dbcontrol db -repos create -cluster

STARTED EMCA at Jun 18, 2014 11:30:26 PM
EM Configuration Assistant, Version 11.2.0.3.0 Production
Copyright (c) 2003, 2011, Oracle. All rights reserved.

Enter the following information:
Database unique name: tequdb
Service name: tequdb
Listener port number: 1521
Listener ORACLE_HOME [ /u01/app/11.2.0.4/grid ]:
Password for SYS user:
Password for DBSNMP user:
Password for SYSMAN user:
Cluster name: cluster-clu1
Email address for notifications (optional):
Outgoing Mail (SMTP) server for notifications (optional):
ASM ORACLE_HOME [ /u01/app/11.2.0.4/grid ]:
ASM port [ 1521 ]:
ASM username [ ASMSNMP ]:
ASM user password:
-----------------------------------------------------------------

You have specified the following settings

Database ORACLE_HOME ................ /u01/app/oracle/product/11.2.0.4/dbhome_1

Database instance hostname ................ Listener ORACLE_HOME ................ /u01/app/11.2.0.4/grid
Listener port number ................ 1521
Cluster name ................ cluster-clu1
Database unique name ................ tequdb
Email address for notifications ...............
Outgoing Mail (SMTP) server for notifications ...............
ASM ORACLE_HOME ................ /u01/app/11.2.0.4/grid
ASM port ................ 1521
ASM user role ................ SYSDBA
ASM username ................ ASMSNMP

-----------------------------------------------------------------
Do you wish to continue? [yes(Y)/no(N)]: y
Jun 18, 2014 11:31:01 PM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /u01/app/oracle/cfgtoollogs/emca/tequdb/emca_2014_06_18_23_30_26.log.
Jun 18, 2014 11:31:14 PM oracle.sysman.emcp.EMReposConfig createRepository
INFO: Creating the EM repository (this may take a while) ...
Jun 18, 2014 11:33:54 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully created
Jun 18, 2014 11:34:03 PM oracle.sysman.emcp.EMReposConfig uploadConfigDataToRepository
INFO: Uploading configuration data to EM repository (this may take a while) ...
Jun 18, 2014 11:34:50 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Uploaded configuration data successfully
Jun 18, 2014 11:34:50 PM oracle.sysman.emcp.EMDBCConfig instantiateOC4JConfigFiles
INFO: Propagating /u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j/j2ee/OC4J_DBConsole_dm01db01_tequdb to remote nodes ...
Jun 18, 2014 11:34:52 PM oracle.sysman.emcp.EMDBCConfig instantiateOC4JConfigFiles
INFO: Propagating /u01/app/oracle/product/11.2.0.4/dbhome_1/oc4j/j2ee/OC4J_DBConsole_dm01db02_tequdb to remote nodes ...
Jun 18, 2014 11:34:54 PM oracle.sysman.emcp.EMAgentConfig deployStateDirs
INFO: Propagating /u01/app/oracle/product/11.2.0.4/dbhome_1/dm01db01_tequdb to remote nodes ...
Jun 18, 2014 11:34:55 PM oracle.sysman.emcp.EMAgentConfig deployStateDirs
INFO: Propagating /u01/app/oracle/product/11.2.0.4/dbhome_1/dm01db02_tequdb to remote nodes ...
Jun 18, 2014 11:34:58 PM oracle.sysman.emcp.util.DBControlUtil secureDBConsole
INFO: Securing Database Control (this may take a while) ...
Jun 18, 2014 11:35:39 PM oracle.sysman.emcp.util.DBControlUtil startOMS
INFO: Starting Database Control (this may take a while) ...
Jun 18, 2014 11:36:03 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: Database Control started successfully
Jun 18, 2014 11:36:03 PM oracle.sysman.emcp.EMDBPostConfig performConfiguration
INFO: >>>>>>>>>>> The Database Control URL is <<<<<<<<<<<
Jun 18, 2014 11:46:24 PM oracle.sysman.emcp.EMDBPostConfig showClusterDBCAgentMessage
INFO:
**************** Current Configuration ****************
INSTANCE NODE DBCONTROL_UPLOAD_HOST
---------- ---------- ---------------------

tequdb dm01db01 dm01db01.tequ.com
tequdb dm01db02 dm01db01.tequ.com

Jun 18, 2014 11:46:24 PM oracle.sysman.emcp.EMDBPostConfig invoke
WARNING:
************************ WARNING ************************

Management Repository has been placed in secure mode wherein Enterprise Manager data will be encrypted. The encryption key has been placed in the file: /u01/app/oracle/product/11.2.0.4/dbhome_1/dm01db01_tequdb/sysman/config/emkey.ora. Ensure this file is backed up as the encrypted data will become unusable if this file is lost.

***********************************************************
Enterprise Manager configuration completed successfully
FINISHED EMCA at Jun 18, 2014 11:46:24 PM

成功建立EM。

7.重新啟用密碼驗證函式。

SQL> alter profile default limit password_verify_function VERIFY_FUNCTION_11G;

Profile altered.

SQL> select * from dba_profiles;

PROFILE RESOURCE_NAME RESOURCE LIMIT
------------------------------ -------------------------------- -------- ----------------------------------------
DEFAULT COMPOSITE_LIMIT KERNEL UNLIMITED
DEFAULT SESSIONS_PER_USER KERNEL UNLIMITED
DEFAULT CPU_PER_SESSION KERNEL UNLIMITED
DEFAULT CPU_PER_CALL KERNEL UNLIMITED
DEFAULT LOGICAL_READS_PER_SESSION KERNEL UNLIMITED
DEFAULT LOGICAL_READS_PER_CALL KERNEL UNLIMITED
DEFAULT IDLE_TIME KERNEL UNLIMITED
DEFAULT CONNECT_TIME KERNEL UNLIMITED
DEFAULT PRIVATE_SGA KERNEL UNLIMITED
DEFAULT FAILED_LOGIN_ATTEMPTS PASSWORD 10
DEFAULT PASSWORD_LIFE_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_REUSE_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_REUSE_MAX PASSWORD UNLIMITED
DEFAULT PASSWORD_VERIFY_FUNCTION PASSWORD VERIFY_FUNCTION_11G
DEFAULT PASSWORD_LOCK_TIME PASSWORD 1
DEFAULT PASSWORD_GRACE_TIME PASSWORD 7

16 rows selected.

配置完成後檢查是否能夠正常的登入EM工具，另外還有兩點需要注意：
1).emca是用作業系統oracle使用者執行的。
2).不能使用IP地址訪問EM工具，一定使用機器名訪問，例如：

同時這篇文章也是對《構建最高可用Oracle資料庫系統：Oracle 11gR2 RAC管理、維護與效能最佳化》的10.6.2小節的補充和完善。

--end--

Oracle 11gR2 RAC Database使用emca配置叢集dbconsole

APPLIES TO:

SYMPTOMS

CAUSE

SOLUTION

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