Hi there are 10 computers. Put the program on everything and connected them to the database server.
9 connected ok, but the tenth does not connect and pings the error:
Authentication to host 'xxx.xxx.xxx.xxx' for user 'xxx' using method 'caching_sha2_password'
failed with message: Reading from the stream has failed.
Tell me how to fix this?
The problem, as I understand it, is in the computer, since no error occurs on other PCs
Related
i got a problem with Plesk (Ubuntu Webserver),- i cant access plesk.
I havent change anything before. The following error messages is shown:
Server Error
500
Plesk\Lock\Exception
Lock Manager error: '[LockManagerException] Can't open or create shared memory by shm.name: "/run/lock/lmlib/SharedLockManagerStorage0.2.4"; shm.start_size: "8388608"; error "Permission denied"'.
I cant try:
https://support.plesk.com/hc/en-us/articles/115003405193-Unable-to-open-Plesk-Lock-Manager-error-Can-t-open-or-create-shared-memory-by-shm-name
or
https://support.plesk.com/hc/en-us/articles/115002301654-Plesk-is-unavailable-after-upgrade-Can-t-open-or-create-shared-memory-by-shm-name
or
https://support.plesk.com/hc/en-us/articles/115000224773-Plesk-is-not-accessible-Can-t-open-or-create-shared-memory-by-shm-name
because i can currently only connect to Server via SSH when in rescue mode.
(Dont know why ... idea how to enable/check SSH, so i can connect in normal mode ??)
How can i fix the problem when the rescue mode is running?
Greetings,
Julian
I was able for past projects to connect through filezilla. I followed each time this tutorial: https://blog.openshift.com/using-filezilla-and-sftp-on-windows-with-openshift/
Now, on my newly created application I cannot connect. I get these errors:
Error: Server sent disconnect message
Error: type 2 (protocol error):
Error: "Too many authentication failures for 56420afe7628e1bc3d0001b3"
Error: Could not connect to server
Thanks
EDIT: Its interesting because now I check some of my other websites wich were stored in filezilla site manager and 3 of the 8 have the same error. I have't modified anything to them. I tried with another FTP client (WINSCP) and all the sites work fine. I updated filezilla to the latest version and I still have errors. I can't explain myself why some sites work and some others simply doesn't work anymore without making any change...
When I try to open SQL developer then I am getting this error:
An error was encountered performing the requested operation:
IO Error: Socket read timed out
The Network Adapter could not establish the connection Vendor code 17002
What is the problem?
Typical causes for that error:
Your database listener is not running
It is running, but maybe there is a firewall intervening
It is running, no firewall issue, but you have provided incorrect connection details.
Source: https://community.oracle.com/thread/3519434
Make sure your installation is on a LOCAL drive!
If your SQL Developer is launched from a network location (specifically, a different location than your database network location), that could be the issue.
I was having the same problem and I moved my installation to my local drive and it connected right away :)
Above answers are exact causes but to resolve this:
Go to server machine and login as root then run:
( # xhost + )
Then come to oracle user and run:
( $ lsnrctl reload LISTENER_NAME )
Hi I am writing a WPF app that needs to access my files on another PC on my network (domain). My first try to access a remote folder has not been a raging success.
On my Windows 7 laptop I entered in Windows Explorer
\\WIN-DCname\c$
, this is the path to C drive on my test domain controller, and when challenged I logged in with the administrator account for the DC. I can then access the folder tree of C drive as expected.
As a test application I used the following to probe that same drive:
Try
Dim DirInfo As New DirectoryInfo("\\WIN-DCname\c$")
Dim Dirs = DirInfo.GetDirectories.OrderByDescending(Function(x) x.FullName)
Catch ex As Exception
End Try
but the GetDirectories line throws an exception:
The system detected a possible attempt to compromise security. Please
ensure that you can contact the server that authenticated you.
I'm starting to think there is a permissions problem here.... Do I have to programmatically authenticate again prior to doing this? If so how?
Or is it not possible to do a GetDirectories over the network? Is there another way?
Thanks for any advice!
In the end it turns out that I needed to use Impersonation, which lets me programmatically emulate another user while executing a block of code. No opening of ports was required.
Microsoft explains it all as follows:
CAUSE This problem occurs because the network firewall filters Kerberos traffic.
RESOLUTION To resolve this problem, configure the network firewall so that TCP port 88 and UDP port 88 are not blocked for either domain.
Multiple network connections - Wireless, Wired Ethernet
The error “The system detected a possible attempt to compromise security.” started happening for me when I started alternately using a Wireless network connection at night and a wired Ethernet connection during the day.
I connect to a database with read only access using SQL developer. It's a TNS connection. I use a tnsnames.ora, forwarding port script and SQL Developer.
In the past, occasionally, when connecting, I get a error message
Got a minus one from a read call.
Vendor Code 0
If I do a reboot, it goes away. Another friend suggested changed the forwarding port which worked for him.
I recently upgraded to a new computer and now it seems that I am getting the error message consistently. Reboot or changing forwarding port does not help at all.
The port forwarding script contains something like this
putty -L (port):(machine name):1521
Does anybody have any idea? Thanks.
My port forwarding script forwards multiple ports. Somehow separating them into 2 smaller file, this error went away.
Check your sqlnet.ora file and comment if there is any entry like the below.
tcp.validnode_checking = yes
tcp.invited_nodes=(<hostname_1>, <hostname_2>)
Now reload your listener and check the connectivity from SQL Developer.
lsnrctl reload <SID>