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Make OCI8 TAF example runnable

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@350179 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Christopher Jones 2020-07-21 06:29:26 +00:00
parent 69795fb4c7
commit 2bbdb795c4
1 changed files with 36 additions and 20 deletions
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56
reference/oci8/taf.xml
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@ -67,7 +67,7 @@
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = orcl)
(SERVICE_NAME = orclpdb1)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
@ -121,7 +121,7 @@
<term><parameter>connection</parameter></term>
<listitem>
<para>
The Oracle connection on which the TAF callback was
The Oracle connection on which the TAF callback was
registered via <function>oci_register_taf_callback</function>.
The connection is not valid until the
failover completes successfully.
@ -133,7 +133,7 @@
<listitem>
<para>
The failover event indicates the current status of
the failover.
the failover.
</para>
<para>
<itemizedlist>
@ -249,11 +249,10 @@ class MyClass {
{
switch ($event) {
case OCI_FO_BEGIN:
printf(" Failing Over ... Please stand by");
printf(" Failing Over ... Please stand by\n");
printf(" Failover type was found to be %s \n",
(($type==OCI_FO_SESSION) ? "SESSION"
:($type==OCI_FO_SELECT) ? "SELECT"
: "UNKNOWN!"));
:(($type==OCI_FO_SELECT) ? "SELECT" : "UNKNOWN!")));
self::$retry_count = 0;
break;
case OCI_FO_ABORT:
@ -286,36 +285,53 @@ class MyClass {
}
}
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$fn_name = 'MyClass::TAFCallback';
oci_register_taf_callback($conn, $fn_name); // Register TAFCallback to Oracle TAF
$conn = oci_connect('hr', 'welcome', 'orcl');
$sysconn = oci_connect('system', 'oracle', 'orcl');
$sql = "SELECT col1 FROM mytab";
// Use a privileged connection to construct a SQL statement that will initiate failover
$sql = <<< 'END'
select unique 'alter system disconnect session '''||sid||','||serial#||''''
from v$session_connect_info
where sid = sys_context('USERENV', 'SID')
END;
$s = oci_parse($conn, $sql);
oci_execute($s);
$r = oci_fetch_array($s);
$disconnectssql = $r[0];
oci_register_taf_callback($conn, $fn_name); // Register TAFCallback to Oracle TAF
print("Parsing user query\n");
$sql = "select systimestamp from dual";
$stmt = oci_parse($conn, $sql);
oci_define_by_name($stmt, 'COL1', $col1);
// For example, if a connection loss occurs at this point, oci_execute() will
// detect the loss and failover begins. During failover, oci_execute() will
// invoke the TAF callback function several times. If the failover is successful,
// a new connection is transparently created and oci_execute() will continue as
// usual. The connection session settings can be reset in the TAF callback
// function. If the failover is aborted, oci_execute() will return an error
// function. If the failover is aborted, oci_execute() will return an error
// because a valid connection is not available.
// Disconnect the user, which initiates failover
print("Disconnecting the user\n");
$discsql = oci_parse($sysconn, $disconnectssql);
oci_execute($discsql);
print("Executing user query\n");
$e = oci_execute($stmt);
if ($e == false)
{
// do error handling, if oci_execute() fails
// var_dump(oci_error($stmt));
}
while (oci_fetch($stmt))
{
echo "COL1 value is $col1<br>\n";
if (!$e) {
$m = oci_error($stmt);
trigger_error('Could not bind a parameter: '. $m['message'], E_USER_ERROR);
}
$row = oci_fetch_array($stmt);
print($row[0] . "\n");
// do other SQL statements with the new connection, if it is valid
// $stmt = oci_parse($conn, . . .);
// $stmt = oci_parse($conn, . . .);
?>
]]>