The Oracle Management Agent for BS2000/OSD is responsible for monitoring all components on the host computer. Once installed, the Oracle Management Agent knows how to monitor default target types, such as the Oracle Database. For more information, refer to Oracle Enterprise Manager Concepts.
This chapter describes the following sections:
The following is a list of preinstallation issues:
Check if the BS2000/OSD POSIX subsystem is started
Check if jenv v6.0 is installed
Check if perl v5.8 is installed
If one of the required software packages is not installed, then install the software package first before installing Oracle Management Agent.
Ensure that the user address space is 1 GB
Ensure that there is at least 1 GB disc space available on the POSIX file system
Ensure that the file
/etc/hosts includes an entry with a loopback address for the localhost similar to the following example:
127.0.0.1 localhost local # loopback
Add all Oracle databases you want to monitor the file
/var/opt/oracle/oratab with the following format:
The following table describes the parameters in the format:
||system identifier of the database|
||Oracle home directory under POSIX|
||user ID where the database files are stored|
Each database that should be monitored needs an entry in the
oratab file. An example for a valid
oratab file is:
# oratab file # valid entries are of the following form: # ORACLE_SID:ORACLE_HOME:N|Y:ORACLE_DATA orcl:/ora11202/oracle/product/10g:N:$ORACLE
Note:The DBA group should have read and write access to the
oratabfile and the
oracledirectory in the
Check the Oracle Management Agent release number. Oracle Management Agent that ships with release 11.2 can monitor releases 10.x and 11.x. Monitoring of a Oracle9i is not supported.
Ensure that you copy the appropriate
LISTENER.ORA file to the
$ORACLE_HOME/network/admin directory to monitor a LISTENER.
Ensure that you grant access to the alert file to all users, if you want to monitor a database under a user ID different from the user ID of the Enterprise Management Agent.
It is recommended to install the Oracle Management Agent under a separate Oracle Home directory. All Oracle users should belong to the same group, for example, oracle. To start the installation enter:
You are prompted for the following:
||This is the Management Agent's home directory.|
||The port on which the Management Agent should listen.|
||The host name of the Oracle Management Server|
||The port of the Oracle Management Server|
To finalize the EM Agent installation login as root and execute the following script:
The installation of the Management Agent, can also be operated by a background process. In this case, the parameters
EM-OMS-HTTP-PORT are mandatory parameters and must be specified with the following procedure call:
/ENTER-PROCEDURE $ORAC1120.INSTALL.P.AGENT,(EMDROOT='/u01/app/orac1120/product/emagent',EM-AGENT-PORT='1813',EM-OMS-HOST='omshost.example.com',EM-OMS-HTTP-PORT='1159'), CPU-LIMIT=300
The installation is logged to the
It is recommended to use a CPU-LIMIT greater than 200.
To run the agent, start a POSIX shell and type the following command:
emctl start agent
If you start the Management Agent with the
emctl utility in the POSIX shell, then the Management Agent inherits the
RUN-PRIORITY of the login process.As a consequence a defined
CPU-LIMIT causes the Management Agent to terminate when the limit is reached. If you want to start the Management Agent without
CPU-LIMIT, then use the BS2000 start procedure for the Management Agent. Login to the BS2000 Management Agent user ID and execute the command:
To stop the agent, start a POSIX shell and type the following command:
emctl stop agent
To get the status of the agent, start a POSIX shell and type the following command:
emctl status agent
Use the Oracle Management Agent for BS2000/OSD as described in the Oracle Database 11g Enterprise Manager book set.
Note:Oracle recommends to use the start procedure in the BS2000 environment to start the Management Agent.
The following is a list of issues that might affect Oracle Enterprise Manager Agent
Oracle Management Agent for BS2000/OSD can monitor servers that are running Oracle Database 10g or Oracle Database 11g.
The Oracle Management Agent for BS2000/OSD does not support the SNMP framework. That means, the agent is not integrated within the EMANATE master agent for BS2000/OSD. The agent does not accept any SNMP requests and does not send any SNMP trap. Therefore, the Oracle Management Agent for BS2000/OSD is not usable with third party SNMP management systems.
Oracle Database 10g and Oracle Database 11g for BS2000/OSD supports only a minimal set of system statistics and these may not reflect the actual performance of the system.
Currently, Oracle Database 11g for BS2000/OSD only ships with the Oracle Enterprise Manager Agent. Oracle Enterprise Manager Grid Control Console is not supported, though this release does support a remote Oracle Enterprise Manager Grid Control Console.
Currently, the Management Agent supports only a minimal set of host metrics and these may not reflect the actual performance and only a part of the configuration of the system.
The dbconsol is not supported on BS2000/OSD.
Typically, the Oracle Management Agent is monitored by an internal watchdog process and is restarted in case of an error. This method does not prevent from any crashes where at least one task of the thread application is kept alive and might inhibit a proper restart of the Management Agent. If the Oracle Management Agent cannot be started or restarted, then use the following instructions to resolve the issue:
Login to the POSIX shell, set your environment and run the utility ithshow, for example:
$ . /u01/app/orac1120/agent11g/.profile.oracle $ ithshow
This utility produces an output similar to the following:
STARTED AT 2012-06-12-135624 BY POSIX (running) LLM = EMAGENT (prelinked) MAIN = IC@#MAIN APPLL = :POR2:$ORAQAX13.ORALOAD-ASCII.LIB RUNTL = :BUG1:$TSOS.SYSLNK.PTHREADS.013 PTHvers = 01.3A10 2011-04-14 09:19:23 FDs = 8 (8 ORIG FDs) Threads = 10 (6 user threads, 4 system threads) TYPE TSN PID JOB-TYPE PRI CPU-USED CPU-MAX ACCOUNT# ORIG 1MYQ 3942 (X'0F66') 3 DIALOG *0 240 16.7989 32767 FSC executing request THRE 1MYW 3948 (X'0F6C') 3 DIALOG *0 240 21.7415 32767 FSC executing user thread
Here you find the TSNs of the tasks involved in the
PTHREADS application. You can connect to the
PTHREADS application when you choose the TSN of the ORIG task as the input for the parameter TSN of the
ITH-START procedure in the following format:
When you see the double slash prompt you can type
CANCEL-THREADED-PROGRAM to cancel the
PTHREADS application. If the
ORIG task is already terminated, then you can terminate all other
PTHREADS tasks by using the BS2000 system command
If the Management Agent is running on a SQ system in x86-64 mode, then you must define the proper load library in the procedure parameters as follows:
If the Management Agent terminates abnormally, then it might be possible that a process with the name
user_number stays alive. This process is a program cache and cannot be canceled with the BS2000
CANCEL-JOB command. This process can only be stopped using the POSIX command
posdbl. For example, the following shows you how you can identify and stop a pending program cache in the POSIX shell:
$ ps -fu emuser UID PID PPID C STIME TTY TIME CMD EMUSER 2178 2175 0 07:48:08 pts/0 0:01 [sh] EMUSER 4179 2178 2 14:05:16 pts/0 0:00 [ps] EMUSER 4168 1 0 14:05:06 ? 0:00 dblu511
In this example, the process
dblu511 with the
pid 4168 is still alive. To stop this process enter the following command:
$ pdbl -uD