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тАО07-22-2003 11:02 PM
тАО07-22-2003 11:02 PM
Running systems :
one V2500 / 25 Oracle databases and instances
Oracle Applications for all
databases
two N4000 / 11 Oracle databases and instances
2 BEA weblogic servers
1 BRIO server ( ODS and BQS )
one K460 / 3 Oracle databases
How many people would you suggest to keep the systems and databases up and running ?
Rgds
Alexander M. Ermes
Solved! Go to Solution.
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тАО07-22-2003 11:28 PM
тАО07-22-2003 11:28 PM
Re: How many people would you employ for sysadmin / dba ?
Hi,
Are the instances OLTP or data warehouses?
Are you running 24 by 7?
Obviously you need more DBA's than OS guys.
You have:
29 databases.
2 Webservers
1 BRIO server
4 HP 9000 Machines
You didn't mention the most important Oracle instances. Meaning the ones that require more attention (backup, tuning, monitoring.....)
With my humble opinion, I think you need:
1) 1 Sys admin (for 4 HP-UX Machines + OS), also another guy to cover him??
2) 1 (or 2 guys for BEA) they should be able to cover each other on vacations... or maybe let the sys admins do it. They can with proper training.
3) You'll need 2 DBA's in three shifts if you are 24 by 7. So they can share the load. Of course this assuming you will use Oracle Management Server.
4) For BRIO, I have no info.
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тАО07-22-2003 11:39 PM
тАО07-22-2003 11:39 PM
Re: How many people would you employ for sysadmin / dba ?
and 2 A-400, 1 D-390 and 1 RP5430
=> only 1 DBA/SA
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тАО07-22-2003 11:42 PM
тАО07-22-2003 11:42 PM
Re: How many people would you employ for sysadmin / dba ?
Some additional info :
Instances are not running OLTP or datawarehouse.
The two N4000 are clustered.
On these machines we have three instances running 24x7, but we don't do shifts ( at the moment ). In case something goes wrong one person with a cellphone ( standby ) will be called.
Khalid, your comment for shifts :
Two dba's in three shifts meaning 16 hrs per day ? Or two dba's per shift ?
Rgds
Alexander M. Ermes
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тАО07-22-2003 11:47 PM
тАО07-22-2003 11:47 PM
Re: How many people would you employ for sysadmin / dba ?
1 DBA 1 Assistant
You have about three times the number of instances and the same number of machines, though yours are faster.
We have 1 Sysadmin me, cross-trained in Oracle, for a year we had no dba at all.
We have 1 DBA lightly cross trained in Sysadmin.
We push our people pretty hard though.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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тАО07-22-2003 11:51 PM
тАО07-22-2003 11:51 PM
Re: How many people would you employ for sysadmin / dba ?
Guess, what it is at my place.
The reason for this posting is, i justed wanted to know, how it is handled by others.
Rgds
Alexander M. Ermes
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тАО07-23-2003 12:28 AM
тАО07-23-2003 12:28 AM
Re: How many people would you employ for sysadmin / dba ?
I think it depends on a few things.
1) Does the person or person double up and do other tasks and look after other applications?
2) Are you a 24 x 7 shop?
3) if not is there on-call
We have one oracle DBA who looks after 9 instances on three servers. We also have two informix DBA looking after at least 20 instances on 3 servers.
We have Four Unix admin (including me) looking after 40 odd systems.
Two guys looks after BEA, but this is still in development.
Cheers
Michael
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тАО07-23-2003 12:35 AM
тАО07-23-2003 12:35 AM
Re: How many people would you employ for sysadmin / dba ?
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тАО07-23-2003 12:58 AM
тАО07-23-2003 12:58 AM
Re: How many people would you employ for sysadmin / dba ?
Just to clear the picture.
I am doing sysadmin and dba for all systems.
I have crosstrained a new guy, who mainly works on SQLServer, for HP-UX and Oracle.
This was intense training.
A third man is trained less intense, but he works as database programmer.
Both guys had the basic Oracle training courses for database administration.
We have an on-call schedule setup for the three of us.
Rgds
Alexander M. Ermes
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тАО07-23-2003 01:50 AM
тАО07-23-2003 01:50 AM
Re: How many people would you employ for sysadmin / dba ?
Robert-Jan