DBMS_SCHEDULER and load balancing works

Similar Questions

• The order of failover and load balancing

  Hello

  I have the following scenario. An ESXi with 4 Gbps vmnic. The questions are:

  (1) if I have a group of ports configured for 'Route based on the original virtual Port code' in the policy of balancing load, and for the same port group I the option button 'Override switch failover command"checked, where I set up 3 of the active adapters vmnic, as well as the other vmic remaining as unused adapter, the ESXi uses the policy that I have configured (in this case 'Route based on the original port code') between the three vmnic load balancing marked as active? Or he uses them in the order that they appear in the section active cards?

  (2) Suppossed, I configured the four physical switch ports in an etherchannel group to use 'Route based on the IP hash' load balancing policy. In this situation, then I configured for a certain group of port to only used two active adapters and two others as unused? In this case, ESXi should balance the load using the method hash IP but only in two active adapters? Or it is a misconfigiuration and I should not configure my nic teaming in this way?

  (3) the official setup guide says "NOTICE on IP requires the physical switch be configured with etherchannel. For all other options, etherchannel must be disabled. ». How can I I configured my virtual network, if I have a few groups of political ports based on the hash of the IP to use load balancing and another uses 'Route based on the original port code. This is the case when I for example have two management ports using the same vSwitch with four vmnic (where they are configured as an Etherchannel in the physical switch). I would port one or several groups for virtual machines that use the IP of the hash method of balancing the load and vmkernel ports por management uses only a single adapter active with no back and as "based on the source port ID" load balancing as best practices said.

  Now, the four vmnic is the same for all traffic. The physical switch ports must be configured in an etherchannel group because certain groups of ports will use the method of IP hash, but others are not. The configuration guide I said SHOULD NOT use etherchannel if I won't use the hash IP method, but I'LL use it, but only in groups of one or more ports.

  Maybe I do not share the same vmnic from this situation.

  Finally, it's a philosophical question. What is the difference between 'The route based on the source port ID' and the 'road based on the source MAC Hash' load balancing policy? What is the purpose of the second? It is assumed that if I had two different MAC address in a virtual machine, it would be because I had two different virtual cards inside the virtual machine, which would be connected to two different port ID in the vSwitch, I can use the first strategy (based on the original port code). In other words, which would be the case where I had the traffic entering the same vSwitch but port ID with different source MAC address, so I should chose the method to distinguish the Source MAC address load balancing traffic?

  Thank you.

  Guido.

  (1) as long as you override vmnic only and don't change the policy for this group of ports, he uses the policy configured at level vSwitch and use the selected interface 3 with this policy

  (2) it should work, I don't think it's a problem for the switch receive packets on a subset of the aggregation. I do not think that Etherchannel is supported (IIRC, it is a Cisco proprietary protocol, VMware only supports LACP passive, which corresponds to the Port channel world Cisco.) Trouble me if I'm wrong!)

  (3) I think that's all right, as I have explained in 2), there is no special negotiations with the consolidation of VMware, the important thing only I know is to configure the port on the side of the switch channel if you decide to use the IP hash (that will lead to important questions)

  4) (self labeled) I think it may differ in some cases individuals, as when the operating system use the same MAC address for both NICs (aggregation in-vm) or if you advertise several MAC address for the same network card (ESX in a VM for example would make for its VM). Such cases differently affect this setting.

  That is the right question, and I'm curious to know if someone wants to develop on it!

• Correct settings to use Smart Connect and load balancing?

  Hi guys

  I have a question, the answer of which I was not able to find explicitly, so I hope a quick fix OK / not OK for you:

  I would use tri-band technology provides the R8000, i.e. to activate Smart Connect / load balancing. Is - it only works Ghzs 5 band, or the router can also connect clients on the 2 Ghz bands?

  If this is true, then I need to give the strip of 2, 4 GHz the SSID the same 5 Ghz band, correct?

  Otherwise, if it only works in the 5 Ghz bands, I could keep the SSID distinguishes?

  Thank you

  Balancing of resources between the two radios. 2, 4 GHz band vs a single radio, the two radio channels in the 5 GHz band.

• Double connection ISP and load balancing

  Hi all

  I have the Cisco 2911 router k 9/s with 3 GB ports. I have also two different ISP connections, all have two different available bandwidth (one is asymmetrical, else a symmetrical).

  What I want to achieve is to ensure the balance of Nice load between two ISPS for all PCs behind the NAT device.

  What I know so far, it's that I can use CEF or PfR/REL. For both of this technology, I have some doubts.

  CEF: distributes the network load between the two connections based on sessions (which is good, because I strongly to use tools like Skype or Lync for audio/video conversations). However, what is happening, when I get on one of the ISP connections broadband bandwidth max? He's going to choke for 50% of the connections? Or it will detect the use of bandwidth and to force using second ISP?

  PfR/REL: as far as I understood it resolves my concern regarding the use of the connection, but what happens to the session? Should it also be based on this mechanism? As you know that it is very important for audio/video connections.

  Are there other tools that can provide these load balancing? I know DAB, but I don't want to decide manually, where each service (e.g. http or ssh) will have to go. I'm looking for something more automated.

  Thanks in advance for any help.

  Piotr

  Hello

  I assume that you have a static route for the subnet 213.192.65.0/24 on top of the output and with the combination of order

  network default IP 213.192.65.105 213.192.65.105 IP address is installed as a default gateway. What is the #2 ISP?

  If so, it explains why he always goes on ISP2 only.

  http://www.Cisco.com/en/us/Tech/tk365/technologies_tech_note09186a0080094374.shtml#flagging

  Just remove the config:

  Noneip default-network 213.192.65.105

  Noneip default-gateway 213.192.65.105

  Then again check the routing table:

  SH ip route

  Hope it helps.

  Best regards
  Akim

• NIC and load balancing

  Hello

  I have a new server ESXi 4.1. I currently have a cable connected to one of the two network adapters. When I put in place the management network, I selected the connected NETWORK card and left the other disconnect and deselect (via console settings directly on the physical machine). If I look at the network through vSphere Client cards, that's what I see: http://pix.sonhult.se/vmnics.png.

  What will happen if I connect another cable to my second NETWORK card? Will it set a new IP address for this NETWORK adapter? Could I have the load balancing or redundancy somehow?

  Thanks in advance!

  What will happen if I connect another cable to my second NETWORK card? Will it set a new IP address for this NETWORK adapter?

  Once you have plugged the network cable to your physical switch, you must assign to the vSwitch too. Once you do that the workload of the virtual machine and the management port will - by default - load-balanced in alternate way, which means that the virtual ports are distributed on the physical network interface cards.

  There is no need to assign an IP address any. An IP address is assigned only for the management port and the virtual machines within the guest OS.

  Could I have the load balancing or redundancy somehow?

  Yes. As mentioned above, this will happen automatically once you attach a second NETWORK adapter to the vSwitch.

  See http://www.vmware.com/files/pdf/virtual_networking_concepts.pdf for more details.

  André

• Network [vSphere 4.1] load balancing and failover vMotion

  GoodMorning everyone.

  I have some doubts about the configuration of the network for vMotion in vSphere 4.1

  I know that I can activate a single portgroup VMkernel for vMotion on the single host, but can I have this portgroup in a vSwitch with two or more physical NIC attached.

  Currently, I managed to have a vSwtich with vMotion and management of trade wth two NICs (see attachment).

  Both NICs works very well with the recovery for both exchanges.

  I would switch to a vSwitch with multiple network cards and I have some doubts.

  It seems that I could configure it... but the load balancer for vMotion supported on vSphere 4.1?

  And also, have the protgroup of vMotion in a switch with several network cards, is there a way to check what physical nic is currently used by vMotion?

  I am currently under a license from the company.

  Thank you all for your help.

  vMotion for vSphere pre 5 does not support Multi-NIC, in vSphere 5, you can configure several VMKernel enable vMotion and select different Nic Active and load balance between the two vmnic, but unfortunately not in vSphere 4.x

  For the management of ESXi, if you set active on both network adapters, you not to cross any active advantage / standby because it will only use on vmNIC, unless there is still a failure... but 1 vmNIC just because bandwidth is usually not a problem for the ESXi management only.

  So the answer: upgrade to vSphere 5 for multi-nic vMotion and don't worry ESXi management as an active NETWORK card is more than enough bandwidth,.

  Here's a YouTube on the Multi-NIC vMotion http://www.youtube.com/watch?v=7njBRF2N0Z8 configuration

• Client based in 12 G load balancing

  We have a JDBC configuration against an address scan with client load balancing enabled.

  Example:

  JDBC:Oracle:Thin:@(Description=(LOAD_BALANCE=on)(Address=(Protocol=TCP)(Host=xxxxxxxxxxxx.de)(port=xxxx))(CONNECT_DATA=(service_name=XXXXXX)))

  What I understand of Diference between Client-side and Server Load Balancing If you do not use the server load balancing, you can bypass by connecting the service that identifies a particular node of RAC name.

  
  

  My question is, if you have a connection pool object this configuration and if the name service maps node to goes down, what happens to the connection connection pool?

  
  

  Issue 1) Don't scan address switches to the available according to the name of the service node, then the JDBC driver on the client must file all embusked connections and reconnect the available node? or is all the agnostic client failure of node on and all the old connections available in the pool are available for use?

  
  

  
  

  The client side or server balancing side basically works for the same purpose. The difference is that you do not have all the customers to reconfigure then change something in the environment, such as adding or removing a node such as the side server.

  Answer your question...

  If you mean the shared server architecture by connection pool, the shared server session connected to node 1 will die and everyone shares this session should log. Failover is not automatic, you must specify the failover clause in the JDBC or TNS connect string:

  TEST_TAF =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP)

  (HOST = rac - scan.example.com) (PORT = 1525))

  (CONNECT_DATA =

  (SERVICE_NAME = test)

  (FAILOVER_MODE = (TYPE = SESSION) (METHOD = Basic))

  ) )

  Or if you use failover and load balancing services you set failover described below:

  for 12 c: srvctl $ add orcl db-test - oel6vm1 favorite-available oel6vm2 - tafpolicy BASE - failovermethod SESSION service service - failoverretry 5 - failoverdelay 60

  for 11g: $ srvctl add service d orcl if test - r oel6vm1 - oel6vm2 BASIC EI SESSION m - z 5 AW 60

  Was what you mean?

• The side load balancing test server

  Hello
  Can anyone tell me about any test cases for server side in a 11.1.0.7 RAC load balancing?
  
  I have a 2 RAC nodes with either local_listener and remote_listener correctly (for load balancing server-side). For the test, I create a TNS to my side client that points to a single node of the PAP (a single ADDRESS entry pointing to node 1 of my CARS). So, this customer, whenever I log in, it always connects me node 1 I mentioned in the LMO. This means that server-side load balancing works jointly with the client side only load balancing and I would also add the address entered my TNS for the second node? If Yes, then how can I create a test case to check server load balancing?
  
  Thank you
  
  Salman

  Dear Salman Qureshi,

  There is a small video about load balancing server (http://www.dsvolk.ru/oracle/racdd4d/demos/video/loadbalance/server/serverloadbalance_viewlet_swf.html)

• View connection load balancing servers

  I want to install 2 view of connection on different cluster servers and load balance their. Is this possible? I use this time notice 4.6, but can I upgrade to version 5, as appropriate. I am currently only run 1 server now and I would like to add another if possible to reduduncy.

  This can be done easily, but you will need a method to provide the balance of the charge, as the view that only in native mode.    Video related herein exceeds at some point, http://communities.vmware.com/docs/DOC-14974of load balancing.

• ASA Vpn load balancing and failover

  Hi all.

  We have two asa5520 configured as main unit and emergency in failover configuration, and everything works fine.

  Is it possible with this configuration (switch), configure the vpn load balancing/grouping?

  Thank you

  Daniele

  Hi Daniele,

  You cannot run two of them on two firewalls ASA, VPN feature load balancing or failover functionality.

  Where you need to use the two feature, you must use more than three ASA firewall, two first ASAs will work as the failover and the ASA third will work as cluster VPN for them, the following example uses four firewalls:

  ASA1 (active FO) - ASA2 (TF Standby)

  (VPN virtual master)

  |

  |

  |

  |

  (Backup VPN device)

  ASA3 (active FO) - ASA4 (TF Standby)

  Kind regards

  Wajih

• TMS 14.5 and redundancy with F5 load balancing

  Hello

  I'm looking in the installation guide for TMS 14.5 to design redundancy TMS with the F5 for one of my clients. I wonder if there is any requirement of specific network for the TMS1, TMS2 and F5 must be in the same VLAN or not. My client have a TMS with TMSPE and deploy the TMS Server 2nd in different data center and will use existing F5 load balancing. They cannot have the same VLAN as a current TMS server in the new data where 2nd MSDS server will be Center. Existing F5 load balancing is also, in the VLAN different already.

  y at - there no specific review we need to take care of the redundancy?

  Thank you

  Chris

  As the TMS 14.4, TMS no longer an active/active load-balanced mode and now works as active/passive.

  You can find the details in the "Configure a redundant deployment" section of the Installation of TMS and Upgrade Guide (latest version 14.6 related).

  As long as both devices are accessible (and your F5 can route traffic to each of them according to the needs), it does not matter what VLAN, subnet or a location that each MSDS server resides on.  Information of VLAN in the guide are just one example of how it can be configured in a simple load balancing scenario.

  Wayne
  --
  Remember the frequency responses and mark your question as answered as appropriate.

• Cloud of Pod Architecture and load - single entry Point balancing

  Hello

  I'm looking at our DR put in place for our view environment and Cloud Pod Architecture seems to be the way to go. A question that has popped up and I couldn't get a definitive answer about whether it is possible to use the load balancing of certain aromas to maintain a single point of entry into the environment seen. I would be able to have a connection to the server discovers in A Pod and a login server in View Pod B and then stick a load balancer at the front so that users always connect through load balancing and view.domain.com, they will hit either login server? Would it not possible to use a Windows NLB for that?

  What I want to achieve is to build a second Pod from view in a different geographical location to complete our game existing upward at our headquarters. This new Pod will be alive and actively used instead of a traditional DR implemented whereby all will sit dormant until the sh * t hits the fan. We maintain a single point of entry into the environment and the user gets negotiated at their office floating Linked Clone correct, be it in A Pod or B. Pod

  I hope that makes sense.

  Of the questions let me know.

  Yes, it is definitely possible.

  We currently have a configuration of global namespace for internal and external access.  It appeared linked to a VIP we have on our load balancing programs (Radware currently).  This VIP points to our real servers on both sides.

  Then, we focus on Cloud Pod Architecture configuration dedicated or floating pools.  People can connect and hit one side or both.

  If you leverage GTM or Global Traffic Manager (Smart DNS Round Robin), she may ask the weight or restrictions so when people only struck one side of your data centers until he is not available and then it hits the other side.

  Do not forget that the Volumes of App and RDS Apps are not supported, just virtual offices.

  We currently have two pods between two sites, take advantage of cloud pod and built infrastructure in duplicate for each site to be isolated and independent.

  We focus also on DFS - R on Windows File Services to ensure that the data are replicated and synchronized between the two locations.  Then with the use of DFS Namespace we weight each side sort users to the Site a success files on file to the Site Services and vice versa.

  F5 also has an edition of Big - IP virtual that will work great and deploy GTM, LTM (Load Balancing) and MPA (Access Policy Manager) to work on both internal and external access for you.

• Console Proxy doesn't work is not behind the edge load balancer

  I have a strange problem. I set up a load balancer with vShield Edge. Behind the load balancer, I have two cells vCloud. The Web interface works very well for users, but trying to connect a VMRC to view remote screen it displays 'connection' and then the session is disconnected.

  Then I stop the first cell and users can establish a VMRC connection again. When I activate the first cell once again, the web interface continues to work, but not the proxy of the console. Then I stop the second cell and now elements of the console working again.

  Any tips?

  Gabrié

  Have a similar setup and had the same problem.  Two things to check.  Go to c:\users\\appdata\local\temp\vmware- and open the last file vmware-vmrc - xxxx.log.  Towards the end, it should tell you why it's a failure.  For me, it was a conflict of thumbprint SSL, dating back to the different SSL certificates on the cells.  Also, be sure to vCloud Director Administration-Public address you have the right audiences VCD console address specified. To resolve the inconsistency of my mark, I just created a file certificates.ks a cell and then copied on the other cell and reran the script configures.  Good luck with VMware to help.  I opened a folder for this issue 6 days ago and have yet to get any help!

  -Craig

• Load balancer and the consolidation of NETWORK cards

  Hello

  We recently had to our file VMware Server after a bit nasty failure of his original material.  Since we moved, it mostly worked OK, but we don't get the occational network shares paw when large files are thrown on.

  ESXi host, sure it works use 5Gbit ethernet adapters on the same Virtual Switch.  Looking at the traffic it would seem that all traffic flows in just a single NETWORK adapter and it is not much at all through the others.  Is something that I need to set it up so that it can better load balance between network cards?  Or is it a document anywhere who recommended settings for multiple network cards?

  I found a vDS topic but we have not undertaken more liciencing on most of our servers.

  We run VSphere 4.1 via the Vcentre server.

  Thanks for the help.

  faster4233 wrote:

  What you say makes a little more sense on what I see.  There is very little traffic flowing through other NETWORK cards, but is perhaps because there isn't any real traffic goes to them.  I thought that VMware may use multiple NICs, if it was required that is why I thought I'd see more data on the other.

  Curiosity is anyway that I can combine NICs for more flow using VMware?

  The load balancing, you can achieve with VMware is not a "real" load balancing, this is more a static distribution of traffic in accordance with the policy, you have chosen.

  You use means that according to the virtual switch port ID the vNIC to the host is connected to a specific bear is chosen. This unique vNIC traffic will use this bear as long as this bear does not fail. In this case the guests more with vNIC, you have the better are used Teddy.

  Other policies can be better for other scenarios. For example, 'Hash IP' uses the source IP address and target to choose a teddy bear. It is a good policy for a server with a vNIC single file and many different communication partners. The 'Source Port' policy route all traffic through a teddy bear so that 'Hash IP' policy would use many Teddy as not what ID port is used, but the communications partners. And a file server must have many of them, more than it has of vNIC.

  AWo

  VCP 3 & 4

  \[:o]===\[o:]

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• Difference between the Port ID of the load balancer and MAC?

  There are three strategies for load balancing in 4.0 (one more now in 4.1):

  Function hash IP route

  Route based on the originating Virtual Port ID

  Route in function interference source to the MAC

  I think that I understand perfectly the "IP hash" and how it relates to switches, but what really is the difference between 'source MAC' and 'Port ID'?

  They seems both to do something very similar, which is attached a VM to a physical network card. Why someone should choose the CBC MAC and why the Port-ID? Is there a difference in the way that traffic will extend that could be interesting, when you do a design?

  Hello.

  To simplify, to really all boils down to the formula used to distribute traffic natachasery.

  "Discover Ken Cline" [the great vSwitch debate - part 3 | http://kensvirtualreality.wordpress.com/2009/04/05/The-Great-vswitch-Debate%E2%80%93part-3/] "for many more details on each option works.

  Good luck!