04-12-2018
1.You can accomplish with zpool using ZVOLs
Would not recommend nor advise, unless used in lab.
Performance hit would be noticable.
2. Oracle database on ZFS filesystem (no ASM) will require a lot of tuning to even touch ASM performance.
Expect performance drop on multiTB databases, especially after fragmentation starts regardless of the above statement.
It can be close to ASM, with a lot more effort and zpool separation per oracle database component (redo, archive,data)
3. Use symlinks to link /dev/rdsk/cxtxdxs6 (or the slice selected ofc) to human device name to use in ASM.
Choosing a right naming policy will be of great help here.
Also, use one slice (say s6) for all ASM disk, don't mix, since this will make it harder to administer in case of problems or as management says these days challenges.
I see no need to use metadevices, since ASM is actually an oracle database volume manager supporting mirroring, striping by default etc.
There are some corner cases in which SVM can be useful.
Like, if you require a volume to be raid 5 or raid 6 protected and used by ASM, this can only be done using metadevices (AFAIK, ASM only support mirrors - two way, three way).
But i have never meet this need in practice, since i mostly use storage side luns which are added as is in ASM (partitioned and symlinked, without ASM protection)
Hope that helps
Regards
Peasant.
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LEARN ABOUT PHP
mysqli_stmt_bind_result
MYSQLI_STMT_BIND_RESULT(3) 1 MYSQLI_STMT_BIND_RESULT(3)
mysqli_stmt::bind_result - Binds variables to a prepared statement for result storage
Object oriented style
SYNOPSIS
bool mysqli_stmt::bind_result (mixed &$var1, [mixed &$...])
DESCRIPTION
Procedural style
bool mysqli_stmt_bind_result (mysqli_stmt $stmt, mixed &$var1, [mixed &$...])
Binds columns in the result set to variables.
When mysqli_stmt_fetch(3) is called to fetch data, the MySQL client/server protocol places the data for the bound columns into the speci-
fied variables $var1, ....
Note
Note that all columns must be bound after mysqli_stmt_execute(3) and prior to calling mysqli_stmt_fetch(3). Depending on column
types bound variables can silently change to the corresponding PHP type.
A column can be bound or rebound at any time, even after a result set has been partially retrieved. The new binding takes effect
the next time mysqli_stmt_fetch(3) is called.
PARAMETERS
o $
stmt -Procedural style only: A statement identifier returned by mysqli_stmt_init(3).
o $var1
- The variable to be bound.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Object oriented style
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
if (mysqli_connect_errno()) {
printf("Connect failed: %s
", mysqli_connect_error());
exit();
}
/* prepare statement */
if ($stmt = $mysqli->prepare("SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) {
$stmt->execute();
/* bind variables to prepared statement */
$stmt->bind_result($col1, $col2);
/* fetch values */
while ($stmt->fetch()) {
printf("%s %s
", $col1, $col2);
}
/* close statement */
$stmt->close();
}
/* close connection */
$mysqli->close();
?>
Example #2
Procedural style
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (!$link) {
printf("Connect failed: %s
", mysqli_connect_error());
exit();
}
/* prepare statement */
if ($stmt = mysqli_prepare($link, "SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) {
mysqli_stmt_execute($stmt);
/* bind variables to prepared statement */
mysqli_stmt_bind_result($stmt, $col1, $col2);
/* fetch values */
while (mysqli_stmt_fetch($stmt)) {
printf("%s %s
", $col1, $col2);
}
/* close statement */
mysqli_stmt_close($stmt);
}
/* close connection */
mysqli_close($link);
?>
The above examples will output:
AFG Afghanistan
ALB Albania
DZA Algeria
ASM American Samoa
AND Andorra
SEE ALSO
mysqli_stmt_get_result(3), mysqli_stmt_bind_param(3), mysqli_stmt_execute(3), mysqli_stmt_fetch(3), mysqli_prepare(3), mysqli_stmt_pre-
pare(3), mysqli_stmt_init(3), mysqli_stmt_errno(3), mysqli_stmt_error(3).
PHP Documentation Group MYSQLI_STMT_BIND_RESULT(3)