Hi:
I have been given the responsibility of administering AIX 3.1 machine in my lab recently. And, I am having trouble logging on to the machine using SSH through windous systems. Thus, now no one is able to access it!!
The following error message is displayed when I tried to login:
"The... (3 Replies)
hi,
i have red hat RHEL-5 on my machine, i ma trying to ssh login on remote machine
root@localhost~]# ssh ip_address(of remote machine)
it works fine if i know the password, i use wireless network so the ip keeps on changing,so is there any way to access the machine with some unique name, which... (1 Reply)
Hi Everyone..
User is not able to login using ssh whereas using telnet he is able to login in hp-ux. I checked for ssh configuration file but it is not configured for denying any user access.
What could be the problem? user is not allowed to use telnet.
Thanks.
Laxmikant (3 Replies)
Hi
I have a VPS with CentOS 5 installed and Kloxo v-6.1.4 as CP
Suddenly I am not able to login FTP and SSH
On FTP client I get the error: Could not connect to server
And
On Putty
Server unexpectedly closed the network connection
I have checked the /var/log/secure and /var/log/messages... (1 Reply)
why I can login by telnet using root account
but when i use login by ssh using root account
it is not successful ,is it different password
i am sure ssh service is started (2 Replies)
Hi,
I am trying to login Server2 from server1 in a shell script and need to perfrom few commands,
Below is the command i used to login to server2 from server1
ssh -l username server2
However everytime it executes it asking for password.
How do write a script in such way it takes... (1 Reply)
Dear all,
I have unknowingly deleted openssh-server on one of my linux boxes...
So I could not do ssh in to this machine and also could not scp to it.
Now I need to copy and install openssh-server in this box..
How could I do as both ssh and scp is not working.
Even FTP is also... (1 Reply)
Hello friends,
I have the problem with password less login in solaris 10.
Issue : In solaris 10 I have 2 different users on is oracle and the other is archmon. when I try to ssh to the other server from oracle it is successful but when I try to ssh from archmon it fails, and it asks for the... (1 Reply)
spawn ssh remotehost -l skysmart
when the password is incorrect, this will attempt to log in 2 more times, before it exits.
is there an option I can pass to ssh that'll make it try only once and will then abort immediately if the password is incorrect?
something like:
spawn ssh... (1 Reply)
I have a user account configuration with ssh public/private key that works on multiple servers centos and rhel. One server (Server F) that is not working in centos 6.8. When i ssh into server f I get prompted for a password. I have verified the config and it all is good. I put sshd into debug... (8 Replies)
Discussion started by: bash_in_my_head
8 Replies
LEARN ABOUT MINIX
set_transaction
SET TRANSACTION(7) SQL Commands SET TRANSACTION(7)NAME
SET TRANSACTION - set the characteristics of the current transaction
SYNOPSIS
SET TRANSACTION transaction_mode [, ...]
SET SESSION CHARACTERISTICS AS TRANSACTION transaction_mode [, ...]
where transaction_mode is one of:
ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED }
READ WRITE | READ ONLY
DESCRIPTION
The SET TRANSACTION command sets the characteristics of the current transaction. It has no effect on any subsequent transactions. SET SES-
SION CHARACTERISTICS sets the default transaction characteristics for subsequent transactions of a session. These defaults can be overrid-
den by SET TRANSACTION for an individual transaction.
The available transaction characteristics are the transaction isolation level and the transaction access mode (read/write or read-only).
The isolation level of a transaction determines what data the transaction can see when other transactions are running concurrently:
READ COMMITTED
A statement can only see rows committed before it began. This is the default.
SERIALIZABLE
All statements of the current transaction can only see rows committed before the first query or data-modification statement was exe-
cuted in this transaction.
The SQL standard defines two additional levels, READ UNCOMMITTED and REPEATABLE READ. In PostgreSQL READ UNCOMMITTED is treated as READ
COMMITTED, while REPEATABLE READ is treated as SERIALIZABLE.
The transaction isolation level cannot be changed after the first query or data-modification statement (SELECT, INSERT, DELETE, UPDATE,
FETCH, or COPY) of a transaction has been executed. See in the documentation for more information about transaction isolation and concur-
rency control.
The transaction access mode determines whether the transaction is read/write or read-only. Read/write is the default. When a transaction is
read-only, the following SQL commands are disallowed: INSERT, UPDATE, DELETE, and COPY FROM if the table they would write to is not a tem-
porary table; all CREATE, ALTER, and DROP commands; COMMENT, GRANT, REVOKE, TRUNCATE; and EXPLAIN ANALYZE and EXECUTE if the command they
would execute is among those listed. This is a high-level notion of read-only that does not prevent all writes to disk.
NOTES
If SET TRANSACTION is executed without a prior START TRANSACTION or BEGIN, it will appear to have no effect, since the transaction will
immediately end.
It is possible to dispense with SET TRANSACTION by instead specifying the desired transaction_modes in BEGIN or START TRANSACTION.
The session default transaction modes can also be set by setting the configuration parameters default_transaction_isolation and
default_transaction_read_only. (In fact SET SESSION CHARACTERISTICS is just a verbose equivalent for setting these variables with SET.)
This means the defaults can be set in the configuration file, via ALTER DATABASE, etc. Consult in the documentation for more information.
COMPATIBILITY
Both commands are defined in the SQL standard. SERIALIZABLE is the default transaction isolation level in the standard. In PostgreSQL the
default is ordinarily READ COMMITTED, but you can change it as mentioned above. Because of lack of predicate locking, the SERIALIZABLE
level is not truly serializable. See in the documentation for details.
In the SQL standard, there is one other transaction characteristic that can be set with these commands: the size of the diagnostics area.
This concept is specific to embedded SQL, and therefore is not implemented in the PostgreSQL server.
The SQL standard requires commas between successive transaction_modes, but for historical reasons PostgreSQL allows the commas to be omit-
ted.
SQL - Language Statements 2010-05-14 SET TRANSACTION(7)