Installing OEM for second instance
一台机器运行着从Oracle11.2.0.3的安装程序里的默认的数据库。这个实例名字叫做o1123。
然后我手动创建了第二个实例（通过swingbench的crdb.sh和slob的测试）而不是通过数据库配置助手（或许这是个错误），然后我想访问OEM。第二个实例名字是SOE60G（一个60GB的swingbench数据集数据库）。
首先试着启动dbconsole：
$ emctl start dbconsole
OC4J Configuration issue.
/home/oracle/oracle1123/product/oc4j/j2ee/OC4J_DBConsole_perf234-target1.delphix.com_SOE60G
#ff0000;">not found.
OK, missing file. EM wasn’t configured for this database, make sense. Let’s configure it
$ emca -config dbcontrol db -repos create
...
#ff0000;">SEVERE: Dbcontrol Repository already exists.
Fix the error(s) and run EM Configuration Assistant again in standalone mode.
Looks like there is already a repository, so lets configure EM with out making the repository
# emca -config dbcontrol db
#ff0000;">WARNING: ORA-00942: table or view does not exist
SEVERE: The existing database you have specified has Grid Control repository.
This operation is not supported.
Hmm, what table is missing? Put db in sql trace mode to see what SQL statement ran into the 942 error
sqlplus / as sysdba
alter database set sql_trace=true
exit
rerun and grep for 942 in trace files in user_dump_dest
cd /home/oracle/oracle1123/diag/rdbms/soe60g/SOE60G/trace
grep 942 *
this show a dozen or so files.
Open each one up and searched for 942 and found two distinct SQL queries:
SELECT ATTRIBUTE,SCOPE,NUMERIC_VALUE,CHAR_VALUE,DATE_VALUE FROM #ff0000;">SYSTEM.PRODUCT_PRIVS
WHERE (UPPER('SQL*Plus') LIKE UPPER(PRODUCT)) AND (USER LIKE USERID)
select count(*) from #ff0000;">sysman.mgmt_versions where status > 0 and component_mode
like 'SYSAUX' and component_name in ('DB','CORE')
The first table is from not having run $ORACLE_HOME/sqlplus/admin/pupbld.sql
Second is the problem emca was running into. Let’s look at sysman’s objects and see what’s there.
sqlplus sysman/sys
select object_name from user_objects;
-> no rows returned
OK, sysman looks empty , let’s drop it and recreated it
sqlplus / as sysdba
drop user sysman cascade;
drop user MGMT_VIEW cascade;
someone’s blog had suggested dropping the following but I didn’t
# drop role MGMT_USER;
# drop public synonym MGMT_TARGET_BLACKOUTS;
# drop public synonym SETEMVIEWUSERCONTEXT;
# host port SID
# $ORACLE_HOME/sysman/admin/emdrep/bin/RepManager antarctic 2483 sprod -action drop
# ./emca -repos create
rerun emca
$ emca -config dbcontrol db -repos create
....
Do you wish to continue? [yes(Y)/no(N)]: y
Apr 20, 2013 7:27:51 AM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at
/home/oracle/oracle1123/cfgtoollogs/emca/SOE60G/emca_2013_04_20_07_27_38.log.
Apr 20, 2013 7:27:51 AM oracle.sysman.emcp.ParamsManager checkListenerStatusForDBControl
#ff0000;">WARNING: ORA-01031: insufficient privileges
Apr 20, 2013 7:27:51 AM oracle.sysman.emcp.EMConfig perform
SEVERE:
Database connection through listener failed. Fix the error and run EM Configuration Assistant again.
Some of the possible reasons may be:
1) Listener port 1521 provided is incorrect. Provide the correct port.
2) Listener is not up. Start the Listener.
3) Database service SOE60G is not registered with listener. Register the database service.
4) Listener is up on physical host and ORACLE_HOSTNAME environment variable is set to
virtual host. Unset ORACLE_HOSTNAME environment variable.
5) Listener is up on virtual host. Set environment variable ORACLE_HOSTNAME=.
6) /etc/hosts does not have correct entry for hostname.
Notice the ORA-01031. Hmm, I can connect as sqlplus / as sysdba but connecting as sysdba through the listener requires a password file. Let’s see if password files are set up
sqlplus / as sysdba
show parameters remote_login_passwordfile
remote_login_passwordfile string EXCLUSIVE
that’s set correct, but is there a password file?
cd $ORACLE_HOME/dbs
ls orapw$ORACLE_SID
ls: cannot access orapwdSOE60G: No such file or directory
not there, let’s create it
orapwd FILE=orapw$ORACLE_SID ENTRIES=30
now emca works !
Now what URL to I use to access OEM for the second database?
It’s the same URL as the first database but with different port. We can find the ports for each database in the following file
cat $ORACLE_HOME/install/portlist.ini
Enterprise Manager Console HTTP Port (o1123) = 1158
Enterprise Manager Agent Port #ff0000;">(o1123) = 3938
Enterprise Manager Console HTTP Port (SOE60G) = 5500
Enterprise Manager Agent Port #ff0000;">(SOE60G) = 1830
Post script
通过上述的步骤，当我能够在Chrome里访问OEM数据库页面时，一件奇怪的事情发生了，但是事还没完。进入OEM，首先要求我登录。我以system用户登录，我看见了数据库主页面，然后如果我点击性能标签，然后我得到提示要求我重新登录。我再次登录，回到数据库主页面。不管我点击哪个标签，我最终都在登录后回到数据库主页面。
Firefox里，虽然我曾经登录，我可以进入任何一个标签，更神奇的是，它居然正常工作了！
PS 当我运行emca时，我得到很多变量提示。不试这个，但是好像所有的参数都可以在命令行得到。
参考
http://dbataj.blogspot.com/2011/09/severe-dbcontrol-repository-already.html
http://sheltong-appsdba.blogspot.com/2010/07/configuring-em-on-oracle-11g.html
https://forums.oracle.com/forums/thread.jspa?threadID=1773883
Had a machine running the default database from the Oracle 11.2.0.3 installer. This instance was called o1123.
I then created a second database by hand (with crdb.sh for swingbench and slob tests) instead of dbca (maybe that was a mistake) and then I wanted to acccess OEM. The second instance was called SOE60G ( a 60GB swingbench dataset database)
First tried to start up dbconsole:
$ emctl start dbconsole
OC4J Configuration issue.
/home/oracle/oracle1123/product/oc4j/j2ee/OC4J_DBConsole_perf234-target1.delphix.com_SOE60G
#ff0000;">not found.
OK, missing file. EM wasn’t configured for this database, make sense. Let’s configure it
$ emca -config dbcontrol db -repos create
...
#ff0000;">SEVERE: Dbcontrol Repository already exists.
Fix the error(s) and run EM Configuration Assistant again in standalone mode.
Looks like there is already a repository, so lets configure EM with out making the repository
# emca -config dbcontrol db
#ff0000;">WARNING: ORA-00942: table or view does not exist
SEVERE: The existing database you have specified has Grid Control repository.
This operation is not supported.
Hmm, what table is missing? Put db in sql trace mode to see what SQL statement ran into the 942 error
sqlplus / as sysdba
alter database set sql_trace=true
exit
rerun and grep for 942 in trace files in user_dump_dest
cd /home/oracle/oracle1123/diag/rdbms/soe60g/SOE60G/trace
grep 942 *
this show a dozen or so files.
Open each one up and searched for 942 and found two distinct SQL queries:
SELECT ATTRIBUTE,SCOPE,NUMERIC_VALUE,CHAR_VALUE,DATE_VALUE FROM #ff0000;">SYSTEM.PRODUCT_PRIVS
WHERE (UPPER('SQL*Plus') LIKE UPPER(PRODUCT)) AND (USER LIKE USERID)
select count(*) from #ff0000;">sysman.mgmt_versions where status > 0 and component_mode
like 'SYSAUX' and component_name in ('DB','CORE')
The first table is from not having run $ORACLE_HOME/sqlplus/admin/pupbld.sql
Second is the problem emca was running into. Let’s look at sysman’s objects and see what’s there.
sqlplus sysman/sys
select object_name from user_objects;
-> no rows returned
OK, sysman looks empty , let’s drop it and recreated it
sqlplus / as sysdba
drop user sysman cascade;
drop user MGMT_VIEW cascade;
someone’s blog had suggested dropping the following but I didn’t
# drop role MGMT_USER;
# drop public synonym MGMT_TARGET_BLACKOUTS;
# drop public synonym SETEMVIEWUSERCONTEXT;
# host port SID
# $ORACLE_HOME/sysman/admin/emdrep/bin/RepManager antarctic 2483 sprod -action drop
# ./emca -repos create
rerun emca
$ emca -config dbcontrol db -repos create
....
Do you wish to continue? [yes(Y)/no(N)]: y
Apr 20, 2013 7:27:51 AM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at
/home/oracle/oracle1123/cfgtoollogs/emca/SOE60G/emca_2013_04_20_07_27_38.log.
Apr 20, 2013 7:27:51 AM oracle.sysman.emcp.ParamsManager checkListenerStatusForDBControl
#ff0000;">WARNING: ORA-01031: insufficient privileges
Apr 20, 2013 7:27:51 AM oracle.sysman.emcp.EMConfig perform
SEVERE:
Database connection through listener failed. Fix the error and run EM Configuration Assistant again.
Some of the possible reasons may be:
1) Listener port 1521 provided is incorrect. Provide the correct port.
2) Listener is not up. Start the Listener.
3) Database service SOE60G is not registered with listener. Register the database service.
4) Listener is up on physical host and ORACLE_HOSTNAME environment variable is set to
virtual host. Unset ORACLE_HOSTNAME environment variable.
5) Listener is up on virtual host. Set environment variable ORACLE_HOSTNAME=.
6) /etc/hosts does not have correct entry for hostname.
Notice the ORA-01031. Hmm, I can connect as sqlplus / as sysdba but connecting as sysdba through the listener requires a password file. Let’s see if password files are set up
sqlplus / as sysdba
show parameters remote_login_passwordfile
remote_login_passwordfile string EXCLUSIVE
that’s set correct, but is there a password file?
cd $ORACLE_HOME/dbs
ls orapw$ORACLE_SID
ls: cannot access orapwdSOE60G: No such file or directory
not there, let’s create it
orapwd FILE=orapw$ORACLE_SID ENTRIES=30
now emca works !
Now what URL to I use to access OEM for the second database?
It’s the same URL as the first database but with different port. We can find the ports for each database in the following file
cat $ORACLE_HOME/install/portlist.ini
Enterprise Manager Console HTTP Port (o1123) = 1158
Enterprise Manager Agent Port #ff0000;">(o1123) = 3938
Enterprise Manager Console HTTP Port (SOE60G) = 5500
Enterprise Manager Agent Port #ff0000;">(SOE60G) = 1830
Post script
After the above steps, one of the bizarre things I ran into was being able to access OEM database page in Chrome but nothing else. Coming into OEM, I’m first asked for a login. I login as system, I see the database home page, then if I click on the performance tab, then I get prompted for the login again. I then login again, and I’m back at the database home page. No matter what tab I click, I end up back at the database home page after giving login credentials.
In Firefox, though once I login, I can go to any of the other tabs and it works!
PS when running emca above I was prompted for a number of variables. didn’t try this, but looks like all the arguments can be given in the command line
emca -repos create -silent -ORACLE_HOSTNAME perf234-target1 -SID SOE60G
-SERVICE_NAME SOE60G -ORACLE_HOME /home/oracle/oracle1123/product
-SYS_PWD sys -DBSNMP_PWD sys -SYSMAN_PWD sys
-HOST_USER oracle -HOST_USER_PWD -PORT 1521
references
http://dbataj.blogspot.com/2011/09/severe-dbcontrol-repository-already.html
http://sheltong-appsdba.blogspot.com/2010/07/configuring-em-on-oracle-11g.html
https://forums.oracle.com/forums/thread.jspa?threadID=1773883
http://www.oaktable.net/content/installing-oem-second-instance
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