Need SQLPlus direct connect to DB

This should be an easy one...
On my DB server, I want to connect to the DB using SQLPlus but NOT go through the client/server mechanism. I want a "direct connection" so to speak.
My attempts fail with "ORA-07217: sltln: environment variable cannot be evaluated."
But actually, I'm not sure what I should be using for a username. If the instance I want to connect to is "MYINST", the schema I want to default to is "MYSCHEM", the username for the instance is "MYUSER" and the pw is "MYPW", what should I be entering after the "sqlplus" ?
Thanks in advance
-dave

The problem is not with how you are connecting to sqlplus, but with your os environment. In order to access sqlplus directly, you must set your ORACLE_SID:
in Windows either set ORACLE_SID = sid or create a registry entry under local machine/software/oracle for ORACLE_SID.
In UNIX:
export ORACLE_SID=sid

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Edited by: tulous on Nov 20, 2008 7:40 PM
Edited by: tulous on Nov 20, 2008 7:41 PM

tulous wrote:
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Hello Friends,
We try to create create one Pass Through interface between 2 SAP Systems (Proxy to Proxy) using Direct Connection option in ID.
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>
Olian Saludew wrote:
> Hi guys,
>
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>
> Is there somebody who has developed this type of scenario?
>
> Thanks,
>
> Olian
it can be used for direct connections as we as connectivity to IS.
http://help.sap.com/saphelp_nwpi71/helpdata/en/45/37d74180554c2ce10000000a1553f6/frameset.htm
But I dont think you can use it for ABAP proxy, It is usually for WS communication
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Hi all,
I have a need for a static route to be used instead of a directly connected route. (Long story - involving firewalls and anti-spoofing.. but can go further if required)
I am using a Cisco 3750 switch. I notice directly connected routes have a metric of 0, and the highest metric I can give a static route is 1.
Therefore, how is it possible for me to make the switch use the static route and not the directly connected?
Any help would be appreciated!
Cheers,
Ben

Hi Rick,
Thanks for your patience.
Maybe I should start again.
Initially we had 16 VLANs within the 10.0/16 address space. We have some Cisco 3750's connected by dark fibre accross a couple of kms and then lower access switches all hanging of these by some means. The network is flat.
We have a checkpoint firewall hanging off one of the 3750s connected using a TRUNK port. The firewall has an IP address on all VLANs and is used to route traffic between VLANs based on its ruleset.
So if I have a user in VLAN 10 who wants to talk to VLAN 20, they travel to the firewall, if a rule permits the access, the firewall routes the packet on to VLAN 2 and the switches deliver at Layer 2.
The switches all have their default VLAN 1 disabled, and have an IP address on our management VLAN to allow us to manage the switches.
Its quite important that this IP is on a secured management VLAN as we don't want just anyone being able to snoop switch logins etc..
If we need to login to a switch, the firewall routes our traffic from whatever VLAN we are on to the Management VLAN.
One of our VLANs (the Desktop VLAN) is quite large (approx 1300 hosts) and suffers a great deal from too much arp broadcast traffic.
As we have a flat switched network across several kms, the cost of putting in routers to subnet this large VLAN is excessive.
However, the 3750's we have are perfectly capable of routing between VLANs, so we decide to create a load of new VLANs instead of subnetting our large VLAN. We don't want to use the firewall to route between these new VLANs as thats just giving the firewall more to do, and previously all these hosts were on a single subnet, so we have no need for any strict security - at most we can use ACLs on the switches if we even need that!
So far so good.
With 1300 hosts, we obviously can't make sudden topology changes. Therefore we need to be able to route between the Desktop VLAN and the new VLANs.
We therefore introduce the static routes between the firewall and the switches.
So the firewall says:
route 10.1.0.0/16 via Multilayer switch IP on 10.1.0.0/16
The multilayer switch says:
route 10.0.0.0/16 via Firewall IP on 10.1.0.0/16
This allows routing perfectly between the Desktop VLAN and the new VLANs.
However the moment we enable ip routing on the switches we break access between the desktop VLAN and the Management VLAN.
A packet leaves the desktop VLAN through the default gateway on the firewall. This is then routed to the Management VLAN. The return packet doesn't use the Management VLAN default gateway (firewall), it follows the static route on the switch and ends up at the firewall on 10.1.0.0/16. This is subsequently dropped as the firewall knows the packet hasn't come from the 10.1.0.0/16 network, it originally came from the desktop VLAN on 10.0.0.0/16.
It might seem we can define a route on the switch to say:
route 10.0.50.0/24 (management VLAN) via 10.0.50.254 (firewall). However, this would result in all packets from 10.1.0.0/16 being dropped by the firewall.
The other problem is that if we are on a new VLAN and want to talk to the management VLAN. The packet goes to its default gateway on the switch. The switch says - "I have an IP on the management VLAN, its directly connected" - therefore it ignores the static route, and passes the packet on its way. We have now bypassed the firewall, which is bad.
Incidentally the return packets get routed through the firewall and dropped, as the original packet didn't come through the firewall, there is no entry in the state table for its return.
I think if we turned off the management interface on the switch and managed it through the interface on 10.1.0.0/16, I assume everything would work. However, we don't want to do this for a whole load of other reasons I wont go into.
Im sure there must be a fairly simple solution - I just don't have enough experience!
Cheers,
Ben

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But I don't see how appliance ports help with direct connect NFS/CIFS. E.g.,
In this diagram, traffic from hosts active on fabric B must go over the northbound LAN to reach the NAS. Even if every host and appliance has its NIC failover configured to prefer fabric A and perform preemption, you'll still have failures like NAS NIC's and IOM's that will cause some/all NAS traffic to go across the northbound LAN. Thus, you've got one of two situations:
1) The LAN can handle the NAS traffic. If so, why not plug the NAS into the LAN in the first place?
2) The LAN cannot handle the traffic, in which case you haven't built real fault-tolerance and, worse, a UCS problem can impact the LAN.
Am I missing something here? How are appliance ports better than using switch mode, shown below?

Yes - you have a valid point on the traffic pattern depending on what fails etc.
Just to back up for a moment..
Version 1.3 and below has 2 types of Ethernet ports - Uplink and Server port.
Version 1.4 has 4 types of Ethernet ports - Uplink, Server, Appliance, Monitoring port
In 1.3, to directly connecting a NAS to the FI's meant that you move to switch mode on the FI's and then set the port connecting to the NAS as an uplink port. What that did is that the port connecting to the NAS was a a trunk port at the FI end allowing all VLANs (i.e no VLAN filtering), no QoS settings etc.
So if you wanted to stay in End Host mode AND not liking the above caveats, you connected the NAS to an upstream switch and not UCS and that option remains wit you today.
What the appliance port gives you now is that the VLAN(s) the NAS belongs to can be filtered, QoS settings possible and most importantly, it works in End Host Mode (most deployments are based on it).
The above is the rationale for the Appliance port and the port type was neeeded even if it works today in switch mode.
Now the question comes, appliance port in EHM or Switch mode (which is what the question is).
In EHM you are right, east-west traffic between NAS-blades could utilize the upstream network.
You can design efficiently by specifying the fabric id (A or B as primary) or set fabric affinity if using a soft switch but guaranteed total localization (not using upstream network) cannot be made as you correctly said depending on "what" fails.
If all the uplinks on A fail, yes the whole thing should fail over but if a link between the IOM and the FI fails, then the servers pinned to that link will start using the external network.
So yes, the network needs to be designed keeping the flows and what if scenarios in mind. East-west traffic not hitting upstream at all cannot be assumed.
The long term solution is to have data links between the FI's in EHM or they are vPC peers and hence both links to the NAS from the FI's will be active/active.
Appliance port in switch mode can be used but that also depends on which links are STP blocked etc to guarantee that.
The topology you mentioned does that ..but then you also need to keep in mind on failurea what happens etc i.e the ISL between the FI's should always be forwarding for that VLAN.
Thanks
--Manish

Need SQLPlus direct connect to DB

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