Hello all,
I'm new here, so this information may exist elsewhere on this forum. If so, please point me in the right direction.
Here's the problem.
I'm trying to migrate Oracle data from an HP system to a Sun system using a raw device as a 'bridge' between the two systems. Both machines... (4 Replies)
Hi guys
I have a need to compress the contents of a directory while I am copying data into it. I was able to do this when it was only one file by doing as below:
STEP1: mknod myfile p
STEP2: chmod 777 myfile
STEP3: compress -v < myfile > myfile.Z &
STEP4: cp -p xyz_file myfile... (2 Replies)
Hii friends,
I am a newbie to unix/shell scripting and got stuck in implementing a functionality.Dear experts,kindly spare some time to bring me out of dark pit :confused:..
My requirement is somewhat wierd,let me explain what i have and what i need to do...
1) there are several excel... (1 Reply)
Hi ,
I used the below script to get the sql data into csv file using unix scripting.
I m getting the output into an output file but the output file is not displayed in a separe columns .
#!/bin/ksh
export FILE_PATH=/maav/home/xyz/abc/
rm $FILE_PATH/sample.csv
sqlplus -s... (2 Replies)
Hello, i'm new to the forum and so am i to C programming.
Recently i've gotten a task to create a program that will read an existing .bin file and copy the data to a non existing (so i have to create it) .txt file (some type of conversion)
Now, i now how to put the arguments, opening and... (5 Replies)
I have the following that I'd like to do:
1. I have split a file into separate files that I placed into the /tmp directory. These files are named F1 F2 F3 F4.
2. In addition, I have several directories which are alphabetized as dira dirb dirc dird.
3. I'd like to be able to copy F1 F2 F3 F4... (2 Replies)
Hello people,
I have a question regarding transferring data from one file server to another.
The server is a Solaris 9 box
The old file server is connected via Ethernet cable, and the new file server we are switching is a Fiber channel.
can I use the
dd if=server:/app1 of=server2:/app1
... (2 Replies)
Hi,
I have a large number of data files each containing simple integers from 1 to around 25000 in ascending order. However, they are not in a specific progression; some numbers are missing in each file.
For ex. datfile1 may have the numbers in order 1 2 4 6 7 8 12 ... 24996 24999
while datfile2... (8 Replies)
I need to perform operation as captioned.
I found out USB CD Drive is attached, by running 'lsusb' command.
I am trying to identify mechanism by which I could mount this USB CD drive to disk. After which I expect to copy the contents.
Could anyone indicate how this could be performed ? (3 Replies)
I need to fix an SQL statement in MySQL that should calculate a field using values from two of the columns and I prefer to do this using set-based programming, ie not procedural. What needs to happen is that in a separate column called "delta" the value of "level" is copied depending on whether... (3 Replies)
Discussion started by: figaro
3 Replies
LEARN ABOUT MINIX
begin
BEGIN(7) SQL Commands BEGIN(7)NAME
BEGIN - start a transaction block
SYNOPSIS
BEGIN [ WORK | TRANSACTION ] [ transaction_mode [, ...] ]
where transaction_mode is one of:
ISOLATION LEVEL { SERIALIZABLE | REPEATABLE READ | READ COMMITTED | READ UNCOMMITTED }
READ WRITE | READ ONLY
DESCRIPTION
BEGIN initiates a transaction block, that is, all statements after a BEGIN command will be executed in a single transaction until an
explicit COMMIT [commit(7)] or ROLLBACK [rollback(7)] is given. By default (without BEGIN), PostgreSQL executes transactions in ``autocom-
mit'' mode, that is, each statement is executed in its own transaction and a commit is implicitly performed at the end of the statement (if
execution was successful, otherwise a rollback is done).
Statements are executed more quickly in a transaction block, because transaction start/commit requires significant CPU and disk activity.
Execution of multiple statements inside a transaction is also useful to ensure consistency when making several related changes: other ses-
sions will be unable to see the intermediate states wherein not all the related updates have been done.
If the isolation level or read/write mode is specified, the new transaction has those characteristics, as if SET TRANSACTION [set_transac-
tion(7)] was executed.
PARAMETERS
WORK
TRANSACTION
Optional key words. They have no effect.
Refer to SET TRANSACTION [set_transaction(7)] for information on the meaning of the other parameters to this statement.
NOTES
START TRANSACTION [start_transaction(7)] has the same functionality as BEGIN.
Use COMMIT [commit(7)] or ROLLBACK [rollback(7)] to terminate a transaction block.
Issuing BEGIN when already inside a transaction block will provoke a warning message. The state of the transaction is not affected. To
nest transactions within a transaction block, use savepoints (see SAVEPOINT [savepoint(7)]).
For reasons of backwards compatibility, the commas between successive transaction_modes can be omitted.
EXAMPLES
To begin a transaction block:
BEGIN;
COMPATIBILITY
BEGIN is a PostgreSQL language extension. It is equivalent to the SQL-standard command START TRANSACTION [start_transaction(7)], whose ref-
erence page contains additional compatibility information.
Incidentally, the BEGIN key word is used for a different purpose in embedded SQL. You are advised to be careful about the transaction
semantics when porting database applications.
SEE ALSO
COMMIT [commit(7)], ROLLBACK [rollback(7)], START TRANSACTION [start_transaction(7)], SAVEPOINT [savepoint(7)]
SQL - Language Statements 2010-05-14 BEGIN(7)