Standby best practices

Hi,
1. Primary and Standby databases should be on different servers.
2. The version of the OS of the primary and standby database should be the same.
I know these two points are logical and best practices. Now my management wants to implement the setup on different flavours of AIX (5.3 and 6.1). I have already tried to convince that above two points are best practices, but they require some oracle documentation where it is mentioned.
I tried searching some authentic documents, but couldn't locate. Has anybody some document to support the above two points?
Thanks in advance.

let me know your email id, i can send you my pdf's which i have.
Here are AlejandroVargas notes
blogs.oracle.com/.../gems/DataGuardPhysicalStandbystep.pdf
blogs.oracle.com/.../How-to-open-the-standby-when-the-primary-is-lost.pdf
blogs.oracle.com/.../How-To-Synchronize-Standby-When-Logs-Lost.pdf
blogs.oracle.com/AlejandroVargas/gems/PhysicalStandbyActivatedRead.pdf
blogs.oracle.com/.../how_to_synchronize_the_standby.html
blogs.oracle.com/.../how_to_manually_open_the_stand.html
http://www.google.com/search?q=standby&sitesearch=http%3A%2F%2Fblogs.oracle.com%2FAlejandroVargas%2F
www.dba-oracle.com/t_standby_redo_log_recovery.htm
blogs.oracle.com/.../gems/DataGuardBrokerandobserverst.pdf
Creating a Standby Database on a new host [ID 374069.1]
do Log Corruption While Using Netapps Filesystem With Default Setting of Filesystemio_options Parameter [ID 437005.1]
Edited by: 3Amigos on Dec 13, 2010 2:43 AM

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Best practice for ASA Active/Standby failover

Hi,
I have configured a pair of Cisco ASA in Active/ Standby mode (see attached). What can be done to allow traffic to go from R1 to R2 via ASA2 when ASA1 inside or outside interface is down?
Currently this happens only when ASA1 is down (shutdown). Is there any recommended best practice for such network redundancy? Thanks in advanced!

Hi Vibhor,
I test ping from R1 to R2 and ping drop when I shutdown either inside (g1) or outside (g0) interface of the Active ASA. Below is the ASA 'show' failover' and 'show run',
ASSA1# conf t
ASSA1(config)# int g1
ASSA1(config-if)# shut
ASSA1(config-if)# show failover
Failover On
Failover unit Primary
Failover LAN Interface: FAILOVER GigabitEthernet2 (up)
Unit Poll frequency 1 seconds, holdtime 15 seconds
Interface Poll frequency 5 seconds, holdtime 25 seconds
Interface Policy 1
Monitored Interfaces 3 of 60 maximum
Version: Ours 8.4(2), Mate 8.4(2)
Last Failover at: 14:20:00 SGT Nov 18 2014
This host: Primary - Active
Active time: 7862 (sec)
Interface outside (100.100.100.1): Normal (Monitored)
Interface inside (192.168.1.1): Link Down (Monitored)
Interface mgmt (10.101.50.100): Normal (Waiting)
Other host: Secondary - Standby Ready
Active time: 0 (sec)
Interface outside (100.100.100.2): Normal (Monitored)
Interface inside (192.168.1.2): Link Down (Monitored)
Interface mgmt (0.0.0.0): Normal (Waiting)
Stateful Failover Logical Update Statistics
Link : FAILOVER GigabitEthernet2 (up)
Stateful Obj xmit xerr rcv rerr
General 1053 0 1045 0
sys cmd 1045 0 1045 0
up time 0 0 0 0
RPC services 0 0 0 0
TCP conn 0 0 0 0
UDP conn 0 0 0 0
ARP tbl 2 0 0 0
Xlate_Timeout 0 0 0 0
IPv6 ND tbl 0 0 0 0
VPN IKEv1 SA 0 0 0 0
VPN IKEv1 P2 0 0 0 0
VPN IKEv2 SA 0 0 0 0
VPN IKEv2 P2 0 0 0 0
VPN CTCP upd 0 0 0 0
VPN SDI upd 0 0 0 0
VPN DHCP upd 0 0 0 0
SIP Session 0 0 0 0
Route Session 5 0 0 0
User-Identity 1 0 0 0
Logical Update Queue Information
Cur Max Total
Recv Q: 0 9 1045
Xmit Q: 0 30 10226
ASSA1(config-if)#
ASSA1# sh run
: Saved
ASA Version 8.4(2)
hostname ASSA1
enable password 2KFQnbNIdI.2KYOU encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
interface GigabitEthernet0
nameif outside
security-level 0
ip address 100.100.100.1 255.255.255.0 standby 100.100.100.2
ospf message-digest-key 20 md5 *****
ospf authentication message-digest
interface GigabitEthernet1
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0 standby 192.168.1.2
ospf message-digest-key 20 md5 *****
ospf authentication message-digest
interface GigabitEthernet2
description LAN/STATE Failover Interface
interface GigabitEthernet3
shutdown
no nameif
no security-level
no ip address
interface GigabitEthernet4
nameif mgmt
security-level 0
ip address 10.101.50.100 255.255.255.0
interface GigabitEthernet5
shutdown
no nameif
no security-level
no ip address
ftp mode passive
clock timezone SGT 8
access-list OUTSIDE_ACCESS_IN extended permit icmp any any
pager lines 24
logging timestamp
logging console debugging
logging monitor debugging
mtu outside 1500
mtu inside 1500
mtu mgmt 1500
failover
failover lan unit primary
failover lan interface FAILOVER GigabitEthernet2
failover link FAILOVER GigabitEthernet2
failover interface ip FAILOVER 192.168.99.1 255.255.255.0 standby 192.168.99.2
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-715-100.bin
no asdm history enable
arp timeout 14400
access-group OUTSIDE_ACCESS_IN in interface outside
router ospf 10
network 100.100.100.0 255.255.255.0 area 1
network 192.168.1.0 255.255.255.0 area 0
area 0 authentication message-digest
area 1 authentication message-digest
log-adj-changes
default-information originate always
route outside 0.0.0.0 0.0.0.0 100.100.100.254 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
aaa authentication ssh console LOCAL
http server enable
http 10.101.50.0 255.255.255.0 mgmt
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
telnet timeout 5
ssh 10.101.50.0 255.255.255.0 mgmt
ssh timeout 5
console timeout 0
tls-proxy maximum-session 10000
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
username cisco password 3USUcOPFUiMCO4Jk encrypted
prompt hostname context
no call-home reporting anonymous
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email [email protected]
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
crashinfo save disable
Cryptochecksum:fafd8a885033aeac12a2f682260f57e9
: end
ASSA1#

Best practice on using Flashback and Logical Standby

Hello,
I'm testing a fail-back scenario where I first need to activate a logical standby, then do some dummy transactions before I flashback this db and resme the redo apply. Here is what the steps look like:
1)     Ensure logical standby is in-sync with primary
2)     Enable flashback on standby
3)     Create a flashback guaranteed restore point
4)     Defer log shipping from primary
5)     Activate the logical standby so it’s fully open to read-write
6)     Dummy activities against the standby (which is now fully open)
7)     Flashback the database to the guaranteed checkpoint
8)     Resume log shipping on primary
9)     Resume redo apply on secondary
In the end, i can see the log shipping is happening but the logical standby does not apply any of these..and there is no error in the alert log on Standby side. But the following query could explains why the standby is idle:
SELECT TYPE, HIGH_SCN, STATUS FROM V$LOGSTDBY;
TYPE HIGH_SCN STATUS
COORDINATOR ORA-16240: Waiting for log file (thread# 2, sequence# 0)
ORA-16240: Waiting for log file (thread# string, sequence# string)
Cause: Process is idle waiting for additional log file to be available.
Action: No action necessary. This informational statement is provided to record the event for diagnostic purposes.
I dont understand why it's looking for sequence #0 after the flashback.
Thanks for the help.

Hello;
I hesitate to answer your question because you are not doing a good job of keeping the forum clean :
Total Questions: 13 (13 unresolved)
Please consider closing some of you old answered questions and rewarding those who helped you.
No action necessary.
Do you really have a thread 2? ( Redo thread number )
Quick check
select applied_scn,latest_scn from v$logstdby_progress;Use the DBA_LOGSTDBY_LOG View if you don't have a thread 2 then the sequence# is meaningless.
COLUMN DICT_BEGIN FORMAT A10;
SELECT FILE_NAME, SEQUENCE#, FIRST_CHANGE#, NEXT_CHANGE#,
TIMESTAMP, DICT_BEGIN, DICT_END, THREAD# AS THR# FROM DBA_LOGSTDBY_LOG
ORDER BY SEQUENCE#;Logical Standby questions are difficult, not a lot of them out there I'm thinking.
Check
http://docs.oracle.com/cd/E14072_01/server.112/e10700/manage_ls.htm
"Waiting On Gap State" ( However I still believe you don't have a 2nd thread# )
OR
http://psilt.wordpress.com/2009/04/29/simple-logical-standby/
Best Regards
mseberg
Edited by: mseberg on Apr 26, 2012 5:13 PM

IPhone Best Practices - A Work In Progress

Hello all. I've been tasked with introducing my coworkers into the inner workings of the iPhone, and there are a good number of pointers that I find myself saying over and over again. I'd like to share my best practices with everyone, as well as collect more pointers and opinions from the community at large.
Care and Handling:
First - wash your hands, often. Now I know we all do this often anyway, but I'd like to point out that a healthy amount of hand washing will really go a long way to keep your iPhone screen smudge free. The worst offender, unfortunately, is doughnuts. A small layer of sugar will render that area un-tappable, without any real indication that it has done so. If you are frantically tapping the screen on the iPod button and nothing is happening, clean your phone before you do a hard reset.
Second - Pockets. Keeping your phone in your front pocket is natural and what most of us do. In these summer months, however, keeping your phone in a sweaty front pocket can do a good deal to the dirt level of the screen. If you find yourself cleaning your phone constantly, try a belt clip.
Lastly - Battery Life. Your iPhone's battery life is in your hands, literally. Being aware of your power consumption and planning accordingly is going to be infinitely more important that the battery's native charge-holding ability. This goes especially for the day of purchase - as tempting as it may be to open the box and activate, immediately running around the house watching YouTube, it is best to let the phone charge for 12 hours before use. Charging the phone every night is an absolute must, skipping a day will kill the battery life as your ride the bottom edge the following day. Most of us have access to a USB port while we're at work, best idea will be to plug in your phone when you sit down at your desk.
iPod:
Large Libraries: In the opening weekend, I got many complaints that you cannot manually manage your music. There is a workaround that has made me change the way I work with all of my iPods: the iPhone specific playlist. Simply create a playlist with all of the music you wish to put on your phone and sync that one playlist. This also helps with sync time - you have a start sync and an end sync, not a constant sync all throughout your music management, slowing your computer down in the process.
TV Shows: I watch a lot of MST3K, which I have organized into iTunes as TV shows, split into seasons, the works. The problem that has arisen, therefore, is the one of selective synchronization - you cannot specifically select the TV show you want to sync to the device, instead getting the choices to sync all, unwatched, or latest shows. This is problematic when each show is 700MB large. Here's the work around - select all of the episodes of a specific show and right click, selecting "Mark as Not New", removing all of the little blue dots from the episodes. Select the one, three, or five episodes, and right click them, selecting "Mark as New", then sync the last one, three, or five unwatched episodes. The shows you selected will sync.
iPhoto:
Many users are complaining that iPhoto opens whenever the phone is connected. This is not a preference of the phone, but rather iPhoto. Remember when you first launched iPhoto and it asked you if you wanted to use iPhoto whenever your camera was attached? iPhoto is detecting that your phone is a camera and launching, just as you told it to do.
Mail:
POP accounts - too many unread messages: When first adding a POP account, all of the messages downloaded to the phone arrive as unread. Tapping a message, tapping back, and then tapping the next message can get tedious. Here's the workaround - tap the small down arrow to the upper right hand side of the screen, watching closely to the number next to Inbox. When that number goes down by one, tap the arrow again. If that number hasn't gone down yet, wait a sec, and do not try to tap tap tap tap tap, you'll flood the input queue and crash Mail.
Syncing Mail accounts - All too often people blame the iPhone when their mail does not work. A perfect test is sync you accounts from Mail. If they work in mail, they'll work on the phone, if they are unreliable in Mail, they will also be unreliable on the phone. The Mail client on the iPhone is just as powerful as any other mail client in terms of how it connects to mail servers, if you are having problems you need to check your settings before blaming the hardware. If you prefer to leave your install of Mail.app alone, create a new user account on your Mac, set up all of the accounts you want there, and use iTunes to sync that data to the phone. Make sure to remove that portion of sync from your actual user account's instance of iTunes, however, or it will all sync back.
This message has not been downloaded from the server: This message has snagged a couple users, but upon investigation, these users have filled their iPhones to the absolute brim with music and video. It hasn't been downloaded from the server because there is no space to download to - this also applies to the Camera application dumping to the Home screen. Because there is no space, it can't add any new data. Make some room, then be patient as the mail client gets to that message in cleanup (often a sync or reboot will clear it up).
Safari:
Safari and iPod: Many users have reported iPod stopping in the middle of browsing, often pouting and pursing their lips crying, "This is terrible, I can't even browse the web and listen to music at the same time?". I then check their phone, and lo and behold they have upwards of eight separate pages open at the same time. This device (like every other computer out there) has a finite amount of memory, each page taking up a significant portion depending on how busy the page is. I've routinely gotten through entire albums while browsing through Safari, but I've got one page open in total, and it's usually mostly text. Keep it to one or two pages open and iPod will run forever if you let it.
Web Apps: "This web app is terrible, it keeps booting me to Home!" When was your last reboot? How many other pages are open? In the same vein as Safari and iPod, Web Apps need a good deal of breathing room - give it to them. Close down other pages, stop iPod, or even reboot. Give the app a clean slate and it will perform, every time. iPhoneRemote users will attest to this.
iCal:
Multiple Calendars - Default Calendar: When adding a new appointment, it adds to the default calendar. Appointments can't be shunted to the correct calendar until after sync anyway, so create an "iPhone" calendar and make that the default. Because it's in that calendar, you'll know enough to move it to the appropriate calendar after sync.
Please feel free to add your own best practices, and ask questions, too.

is there any application you can get for the iphone to enlarge text and phone numbers ?
If included with an email or on a website, yes with no application needed.
If you are referring to the text size for your iPhone's contact list, no.
can you insert a phone number from your contact list into a text message ?
No.
i cant seem to figure it out, does the alarm clock work if you turn off the phone at night,
No - powered off with the iPhone means powered off. Any phone that provides for this is not powered off - it is in deep sleep or deep standby mode, which the iPhone does not support. If you don't want your phone ringing or don't want to receive SMS at night but you want to use the iPhone's alarm feature as a wake-up alarm, you can turn on Airplane Mode before going to bed, which will also conserve the battery if your iPhone is not plugged in at night.
can you send a multi media text message ?
No.

External connectivity best practice

Hi,
I would like to know what are the best practices to have external users using Excel to connect to SSAS cube. I understand the general concept that a cube user must be in a domain AD andthat same user is a member of a SSAS cube.
How can I ensure the excel connection is secure and each external user is only able to view their own data? I know the workbook can be password protected but can the connection be also password protected ?
BTW, I am not sure if this is the right forum for this question
Regards

Most modern external drives will typically go into a standby mode shortly after they're unmounted or disconnected which will spin down the drive. They'll still use some power, but your drive won't be doing anything so you don't need to worry about wearing it out. I'm a bit anal about stuff. I usually go so far as to unplug my external drives when I'm not using them as the power supply still consumes some juice... but, in your case, as it seems like you probably go back and forth quite a bit... just powering it down would be the best thing. It really doesn't take any extra effort when connecting your MacBook Pro to just switch it back on again.

Best Practice to configure tnsnames.ora on client of MAA environment in 10g

Hi,
I have a MAA environment, 1 RAC Primary of 2 nodes and 1 RAC standby of 2 nodes too. I want to configure the tnsnames.ora on clients (we have many clients on each PC) and I need to configure the tnsnames.
I have read some papers but the information is not clear regarding to configure the tnsnames on clients. I just want to have only one entrie on tnsnames that I can use on clients to connect to RAC Primary and/or Standby depending on what site is primary in that moment, I was thinking in something like this:
SALES.WORLD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = site1a)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = site1b)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = site2a)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = site2b)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = sales.world)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
(RETRIES = 180)
(DELAY = 5)
Where site1 is RAC Primary now, and site2 is standby. But in case of switchover, I want that clients recognize automatically to which site connect.
I was thinking to stop listeners on site that is not primary on that moment.
The question is if this is the best practice on this scenario?.
Thanks for your advice.
Luis

Hi Louis,
you need to setup a service with clusterware. On both sides: primary and standby.
On primary you start them. On standby the services are also configured but stopped.
In case of switchover or failover, data guard will notice clusterware to bring them up.
You need to use this service name in your clients tnsnames.
Another issue are TCP timeouts, to protect against them you use
outbount_connect_timeout in your sqlnet.ora
Also have a look at
http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10gR2_SwitchoverFailoverBestPractices.pdf
HTH Mathias

Best Practice for monitoring database targets configured for Data Guard

We are in the process of migrating our DB targets to 12c Cloud Control.
In our current 10g environment the Primary Targets are monitored and administered by OEM GC A, and the Standby Targets are monitored by OEM GC B. Originally, I believe this was because of proximity and network speed, and over time it evolved to a Primary/Standby separation. One of the greatest challenges in this configuration is keeping OEM jobs in sync on both sides (in case of switchover/failover).
For our new OEM CC environment we are setting up CC A and CC B. However, I would like to determine if it would be smarter to monitor all DB targets (Primary and Standby) from the same CC console. In other words, monitor and administer DB Primary and Standby from the same OEM CC Console. I am trying to determine the best practice. I am not sure if administering a swichover from Cloud Control from Primary to Standby requires that both targets are monitored in the same environment or not.
I am interested in feedback. I am also interested in finding good reference materials (I have been looking at Oracle documentation and other documents online). Thanks for your input and thoughts. I am deliberately trying to keep this as concise as possible.

OMS is a tool it is not need to monitor your primary and standby what is what I meant by the comment.
The reason you need the same OMS to monitor both the primary and the standby is in the Data Guard administration screen it will show both targets. You also will have the option of doing switch-overs and fail-overs as well as convert the primary or standby. One of the options is also to move all the jobs that are scheduled with primary over to the standby during a switch-over or fail-over.
There is no document that states that you need to have all targets on one OMS but that is the best method for the reason of having OMS. OMS is a tool to have all targets in a central repository. If you start have different OMS server and OMS repository you will need to log into separate OMS to administrator the targets.

Best practice for server configuration for iTunes U

Hello all, I'm completely new to iTunes U, never heard of this until now and we have zero documentation on how to set it up. I was given the task to look at best practice for setting up the server for iTunes U, and I need your help.
*My first question*: Can anyone explains to me how iTunes U works in general? My brief understanding is that you design/setup a welcome page for your school with sub categories like programs/courses, and within that you have things like lecture audio/video files and students can download/view them on iTunes. So where are these files hosted? Is it on your own server or is it on Apple's server? Where & how do you manage the content?
*2nd question:* We have two Xserve(s) sitting in our server room ready to roll, my question is what is the best method to configure them so it meets our need of "high availability in active/active mode, load balancing, and server scaling". Originally I was thinking about using a 3rd party load balancing device to meet these needs, but I was told there is no budget for it so this is not going to happen. I know there is IP Failover but one server has to sit in standby mode which is a waste. So the most likely scenario is to setup DNS round robin and put both xserves in active/active. My question now is (this maybe related to question 1), say that all the content data like audio/video files are stored by us, (We are going to link a portion of our SAN space to Xserve for storage), if we are going with DNS round robin and put the 2 servers in Active/Active mode, can both servers access a common shared network space? or is this not possible and each server must have its own storage space? And therefore I must use something like RSYNC to make sure contents on both servers are identical? Should I use XSAN or is RSYNC good enough?
Since I have no experience with iTunes U whatsoever, I hope you understand my questions, any advice and suggestion are most welcome, thanks!

Raja Kondar wrote:
wht is the Best Practice for having server pool i.e
1) having a single large serverpool consisting of "n" number of guest vm
2) having a multiple small serverpool consisting of less of number of guest vm I prefer option 1, as this gives me the greatest amount of resources available. I don't have to worry about resources in smaller pools. It also means there are more resources across the pool for HA purposes. Not sure if this is Official Best Practice, but it is a simpler configuration.
Keep in mind that a server pool should probably have up to 20 servers in it: OCFS2 starts to strain after that.

Best practices to generate archivelog

Hi,
What are the best practices to generate archivelog?
Regards,
RJiv.

Are you using DataGuard to create & manage the physical standby? If so, what DataGuard protection mode are you using?
Realistically, there is no ideal frequency at which to generate new archived logs. The faster you generate them, the greater the performance implications, but the less data is potentially at risk. You need to weight the performance costs and recoverability benefits for your particular application to determine what sort of a target to set. That probably requires doing some benchmarking to quantify the performance costs for your particular application.
If the goal is minimal data loss, however, running DataGuard in a mode that transfers redo in real time rather than copying archived log files would be preferable and render the discussion on how frequently to generate archived log files moot.
Justin

NetApp direct connect to UCS best practices

Folks,
I have installed many FlexPods this year but all involved either Nexus 5Ks or 7Ks with vPC. This protects the NFS LUN connections from both network outages or UCSM FIM outages. What is not clear to me is the best practice on connecting a NetApp directly to the UCS via applaince ports. Appliance ports seem like a great idea but they seem to ass issues to designs, both in VMware and the network.
Does anyone have a configuration example on both the NetApp, UCS & Vmware side?
I thought I would ask the group their opinion.
Cheers,
David Jarzynka

Hi David
Can you clarify your last posting a little bit.
I never installed direct attached NetApp Storage to the UCS as well.
One drawback i see is, if you have your NetApp System in active/standby mode connected to the FI, then for example all Servers connect through FI A to the NetApp System (NIC with VMKernel for all Server active on FI A). If the NetApp Link fails and switches over to standby link on Fabric B all the Traffic will go form Server to FI A to Uplink Switch to FI B and then to the NetApp System - because the Server is not aware that the NetApp System did a failover. So not all companies will have 10G Uplink Switches which will cause a bottleneck in that case.
What other things do you see? I agree completely with you - all say is a wonderful feature on the slides - but i don't think it's that smart in practise?
Thanks for a short replay.
Cheers
Patrick

Any Oracle best practice/standards for inter-DataCente links for Oracle RAC

Hello Oracle Experts,
Am working for a customer to set up Oracle RAC architecture hosting SAP/Non-SAP applications per SLA levels(MC/BC/Standard) specs. Currently my network team needs calculation to arrive at whether we will go for a (1), (2) or (3) 10Gig links for inter DC (Data-Center) for Oracle RAC.. below is additional background:
•     Porting all client SAP/Non-SAP Oracle databases to new 2 data-centers.
•     There will be 10 blades (4x BL680s and 6x BL460s) in each DC (can scale-up/out later on).
•     Clusters architecture to support Extended/Stretched RAC cluster feature
•     Clusters 2-node each(1-datacenter1, 1-datacenter2) and nodes distributed across 2 x c7000 such that no cluster has more than one node in an enclosure.
•     Each node will have - 4 NIC ports ( 2 x public and 2 x private) , 2 dual-port HBA
•     Oracle ASM/ACFS (ASM Cluster File System), Voting Disk, OCR and Database files
•     the versions are Oracle 11g RAC, Oracle 10g RAC and Oracle 9i (for DataGuard/Standby) on RHEL 6 on Proliant Blades (x86) + BladeMatrix
My network colleagues considering using DWDM across the 2 DCs(given the lesser cost?). Am still looking around if there are any Oracle/industry-best practices around this and having a calculation to support that..
Many Thanks in advance..
Regards,
Abhijit

Hi ,
There are no specific set of steps / practices for batch loading contents to ucm . It would be very much dependent on how many contents does the user have to load to UCM and how well the server is configured in terms of performance .
You can get more details from the following documentation link : http://docs.oracle.com/cd/E21043_01/doc.1111/e10792/c02_settings009.htm
Thanks,
Srinath

Storage Server 2012 best practices? Newbie to larger storage systems.

I have many years managing and planning smaller Windows server environments, however, my non-profit has recently purchased
two StoreEasy 1630 servers and we would like to set them up using best practices for networking and Windows storage technologies. The main goal is to build an infrastructure so we can provide SMB/CIFS services across our campus network to our 500+ end user
workstations, taking into account redundancy, backup and room for growth. The following describes our environment and vision. Any thoughts / guidance / white papers / directions would be appreciated.
Networking
The server closets all have Cisco 1000T switching equipment. What type of networking is desired/required? Do we
need switch-hardware based LACP or will the Windows 2012 nic-teaming options be sufficient across the 4 1000T ports on the Storeasy?
NAS Enclosures
There are 2 StoreEasy 1630 Windows Storage servers. One in Brooklyn and the other in Manhattan.
Hard Disk Configuration
Each of the StoreEasy servers has 14 3TB drives for a total RAW storage capacity of 42TB. By default the StoreEasy
servers were configured with 2 RAID 6 arrays with 1 hot standby disk in the first bay. One RAID 6 array is made up of disks 2-8 and is presenting two logical drives to the storage server. There is a 99.99GB OS partition and a 13872.32GB NTFS D: drive.The second
RAID 6 Array resides on Disks 9-14 and is partitioned as one 11177.83 NTFS drive.
Storage Pooling
In our deployment we would like to build in room for growth by implementing storage pooling that can be later
increased in size when we add additional disk enclosures to the rack. Do we want to create VHDX files on top of the logical NTFS drives? When physical disk enclosures, with disks, are added to the rack and present a logical drive to the OS, would we just create
additional VHDX files on the expansion enclosures and add them to the storage pool? If we do use VHDX virtual disks, what size virtual hard disks should we make? Is there a max capacity? 64TB? Please let us know what the best approach for storage pooling will
be for our environment.
Windows Sharing
We were thinking that we would create a single Share granting all users within the AD FullOrganization User group
read/write permission. Then within this share we were thinking of using NTFS permissioning to create subfolders with different permissions for each departmental group and subgroup. Is this the correct approach or do you suggest a different approach?
DFS
In order to provide high availability and redundancy we would like to use DFS replication on shared folders to
mirror storage01, located in our Brooklyn server closet and storage02, located in our Manhattan server closet. Presently there is a 10TB DFS replication limit in Windows 2012. Is this replicaiton limit per share, or total of all files under DFS. We have been
informed that HP will provide an upgrade to 2012 R2 Storage Server when it becomes available. In the meanwhile, how should we designing our storage and replication strategy around the limits?
Backup Strategy
I read that Windows Server backup can only backup disks up to 2TB in size. We were thinking that we would like
our 2 current StoreEasy servers to backup to each other (to an unreplicated portion of the disk space) nightly until we can purchase a third system for backup. What is the best approach for backup? Should we use Windows Server Backup to be capturing the data
volumes?
Should we use a third party backup software?

Hi,
Sorry for the delay in reply.
I'll try to reply each of your questions. However for the first one, you may have a try to post to Network forum for further information, or contact your device provider (HP) to see if there is any recommendation.
For Storage Pooling:
From your description you would like to create VHDX on RAID6 disks for increasment. It is fine and as you said it is 64TB limited. See:
Hyper-V Virtual Hard Disk Format Overview
http://technet.microsoft.com/en-us/library/hh831446.aspx
Another possiable solution is using Storage Space - new function in Windows Server 2012. See:
Storage Spaces Overview
http://technet.microsoft.com/en-us/library/hh831739.aspx
It could add hard disks to a storage pool and creating virtual disks from the pool. You can add disks later to this pool and creating new virtual disks if needed.
For Windows Sharing
Generally we will have different sharing folders later. Creating all shares in a root folder sounds good but actually we may not able to accomplish. So it actually depends on actual environment.
For DFS replication limitation
I assume the 10TB limitation comes from this link:
http://blogs.technet.com/b/csstwplatform/archive/2009/10/20/what-is-dfs-maximum-size-limit.aspx
I contacted DFSR department about the limitation. Actually DFS-R could replicate more data which do not have an exact limitation. As you can see the article is created in 2009.
For Backup
As you said there is a backup limitation (2GB - single backup). So if it cannot meet your requirement you will need to find a third party solution.
Backup limitation
http://technet.microsoft.com/en-us/library/cc772523.aspx
If you have any feedback on our support, please send to [email protected]

11g Upgrade Best Practices

Hi,
We have a SAP ERP 6.0 EHP5 SPS6 with Oracle Database 10.2.0.2 running on AIX 5.3.
There is a DR Standby Database available for the Production setup.
We need to upgrade the DB to 11g R2.
Please let me know if the DB can be upgraded with minimal or no downtime.
Please share the best practices for upgrading the DB with minimal or no downtime.
Regards,
Narayan

There would be a minimal downtime. From 11202 onwards, the upgrades would be out-of-place so the downtime would be lesser compared to the previous releases. Please see the following link and download the slides for the upgrade and migration from the Upgrade group of Oracle Corp.
http://apex.oracle.com/pls/apex/f?p=202202:2:::::P2_SUCHWORT:migrate112
Aman....

ASM BEST PRACTICES FOR 'DATA' DISKGROUP(S)

In our quest to reduce operating costs we are consolidating databases and eliminating RAC in favor of standalone servers. This is a business decision that is a certainty. Our SAN has been upgraded, and the new database servers are newer, faster, etc.
Our database version is 11.2.0.4 with Grid Infrastructure 12.1.0.1. Our data diskgroup is RAID-5 and our fra is RAID-1+0. ASM has external redundancy. All disks are of equal size with equal storage performance and availability.
Previously our databases were on separate clusters by function: OLTP, REPORTING and ENTERPRISE CONTENT MANAGEMENT. Development/Acceptance shared a cluster, while production was separate.
The new architecture combines different functions onto one server for dev/acc, and another for production. This means they will all be using the same ASM instance. Typically we followed Oracle’s recommendation to have two disk groups, one for data and the other for FRA. That followed well when the database was the only one using the data diskgroup. Now that we are coming databases, is the best practice still to have one data diskgroup and one FRA diskgroup? For example, production will house 3 databases. OLTP is 500 GB, Reporting is 1.3 TB, and Enterprise Content Management is 6 TB and growing.
My consideration is that if all 3 databases accessing the same data diskgroup, the smaller OLTP must traverse through the 6 TB of content management. Or is this thinking flawed?
Does this warrant separate diskgroups? Are there pros and cons to this?
Any insights are appreciated.
Best Regards,
Sherrie

I have many issues to deal with in this 'consolidation', but budget reduction is happening in state and regional government. Our SAN storage is for our enterprise infrastructure and not part of my money-savings directive. We are also migrating to UCS blades for the infrastructure, also not part of my budget reduction contribution. Oracle licensing is our biggest software cost, this is where my directive lies. We've always been conservative and done more with less, now we will do with less, but different because the storage and hardware are awesome.
We've been consolidating databases onto RAC clusters and standalones since we started doing Oracle. For the last 7 years we've supported ASM, 6 databases and 2 passive standby instances (with Data Guard) on a 2-node cluster totalling 64gb of memory. The new UCS blades have 256gb of memory. I get that each database must support its background processes. If I add up the sga, pga allocated, background processes they take up about 130gb of memory, but also consider that there is an overhead to RAC. In all the years we've had Oracle, most of our failures, outages or downtime was because of RAC. On the plus side of that, the seamless failover saved us most times (not all times), but required administrative time for troubleshooting.
I would love to go the Oracle 12c and use its multitenant architecture, but I have 3rd party applications that don't yet support it. 11.2 might be our last release unless I can reduce costs. Consolidation is real and much needed, I believe why Oracle responded to the market with multitenancy.
But back to my first question about how many diskgroups to service a group of databases. What I hearing, and think I agree to, is that one data group will suffice because the ASM instance knows where to retrieve the data and waste will be reduced, as well as management.
I still need to do some ciphering and by no means have a final plan, but thank you all for your insights and contributions.

Best Practices and Maximum Availability

We are on the upgrade path going from 10.2.0.4 to 11.2. I was excited when reading about Transient Logical Standby and how it could cut down your time to just a few minutes of outage. However, I found that we are unable to use it because we have data types that can not be used with Logical Standbys. I was hoping that someone could point me to another Whitepaper or documentation of best practices of upgrading with a Physical Standby from 10g to 11g.
Regards
Tim

Thank you for the reference. It is an interesting concept with the transportable tablespaces. I will have to read this in a little more detail. I am not sure how I get my physical standby back into place. I don't want to have to rebuild it...but maybe the document covers that as well (I didn't see it on the first read).
Thanks for the information.
Regards
Tim

Standby best practices

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