I am now back at step #5 of the plan in OCM 11G Planning (1):
Install the OEM Grid Control Server 10.2.0.5 on gridctrl. This should automatically install the agent as well. The repository will be in REPOS database.
Recommended CPU and Memory Allocation
The deployment size is small – I expect the number of monitored targets be less than 100.
I have two (2) CPUs which is sufficient for combining OMS and OMR on the same machine.
However, the problem could be with memory. I currently have about 0.5GB free after the startup of the database instance, but there is 1GB of cached memory. Depending on the footprint of the Oracle Management Server (OMS), the file cache might be impacted.
$ cat /proc/meminfo MemTotal: 2065852 kB MemFree: 597008 kB Buffers: 31996 kB Cached: 1090536 kB SwapCached: 0 kB Active: 487708 kB Inactive: 866612 kB HighTotal: 1169920 kB HighFree: 1668 kB LowTotal: 895932 kB LowFree: 595340 kB SwapTotal: 4128760 kB SwapFree: 4128760 kB Dirty: 28 kB Writeback: 0 kB AnonPages: 231876 kB Mapped: 156144 kB Slab: 29240 kB PageTables: 10096 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 5161684 kB Committed_AS: 1336800 kB VmallocTotal: 114680 kB VmallocUsed: 8248 kB VmallocChunk: 105972 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 Hugepagesize: 4096 kB
Considering Resource Allocation
Since I have everything on one (1) phyiscal disk, I am setting myself up for problems if the system starts swapping.
Operating System, Browser, Target Certification
According to MetaLink Note 412431.1, RHEL 5.0 on x86 is certified to run OEM Grid Control.
The packages listed in Required Packages on Linux all are the right levels or higher:
# rpm -qa make binutils gcc make-3.81-3.el5 binutils-22.214.171.124.6-12.el5 gcc-4.1.2-46.el5
Oracle Management Repository Software Requirements
For Enterprise Manager Grid Control with an Existing Database
However, I have to check MetaLink Note 412431.1 for compatability of the Oracle Management Repository (OMR) with the OMS since I am installing OMS with an existing database. And the note says I can use Oracle RDBMS 126.96.36.199 as the OMR.
Since the OMR is in an existing 11G database, I have to follow the procedure in MetaLink Note 467677.1. I choose to install OEM as software-only then configure later (Method 2).
Since the OMR and OMS are on the same host, I think proximity has been achieved.
Host File with Correct Host Name and IP Address
/etc/hosts does not record the hostnames of the proposed network. I have added the four (4) proposed hosts for the OCM network:
# cat >>/etc/hosts <<EOF > 10.1.2.200 gridctrl gridctrl.yaocm.id.au > 10.1.2.201 penrith1 penrith1.yaocm.id.au > 10.1.2.202 penrith2 penrith2.yaocm.id.au > 10.1.2.203 bankstwn bankstwn.yaocm.id.au > EOF
And I had to remove the hostname and network name from the loopback address.
Server Name Dependent on the Order of the IP Address Entry
You will note that I have placed the host name first to give a shorter name for the Management Agent (OMA).
Since I have already installed the RDBMS software already on
gridctrl, the other requirements are satisfied.