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(PHP 5, PECL OCI8 >= 1.1.0)
oci_new_connect — Connect to the Oracle server using a unique connection
Establishes a new connection to an Oracle server and logs on.
Unlike oci_connect() and oci_pconnect(), oci_new_connect() does not cache connections and will always return a brand-new freshly opened connection handle. This is useful if your application needs transactional isolation between two sets of queries.
The Oracle user name.
The password for username .
Contains the Oracle instance to connect to. It can be an » Easy Connect string, or a Connect Name from the tnsnames.ora file, or the name of a local Oracle instance
If not specified, PHP uses environment variables such as TWO_TASK (on Linux) or LOCAL (on Windows) and ORACLE_SID to determine the Oracle instance to connect to.
To use the Easy Connect naming method, PHP must be linked with Oracle 10g or greater Client libraries.
Com o Oracle server 9.2 e seguintes, você pode indicar o parâmetro charset , que será utilizado na nova conexão. Se você estiver utilizando Oracle server < 9.2, este parâmetro será ignorado e a variável de ambiente NLS_LANG deverá ser utilizada.
This parameter is available since version PECL oci8 1.1 and accepts the following values: OCI_DEFAULT, OCI_SYSOPER and OCI_SYSDBA. If either OCI_SYSOPER or OCI_SYSDBA were specified, this function will try to establish privileged connection using external credentials. Privileged connections are disabled by default. To enable them you need to set oci8.privileged_connect to On.
PHP 5.3 and PECL oci8 1.3.4 introduced the OCI_CRED_EXT mode value. This tells Oracle to use External or OS authentication, which must be configured in the database. The OCI_CRED_EXT flag can only be used with username of "/" and a empty password. oci8.privileged_connect may be On or Off.
OCI_CRED_EXT may be combined with the OCI_SYSOPER or OCI_SYSDBA modes.
OCI_CRED_EXT is not supported on Windows for security reasons.
Returns a connection identifier or FALSE on error.
The following demonstrates how you can separate connections.
Exemplo #1 oci_new_connect() example
<?php
echo "<html><pre>";
$db = "";
$c1 = oci_connect("scott", "tiger", $db);
$c2 = oci_new_connect("scott", "tiger", $db);
function create_table($conn)
{
$stmt = oci_parse($conn, "create table scott.hallo (test
varchar2(64))");
oci_execute($stmt);
echo $conn . " created table\n\n";
}
function drop_table($conn)
{
$stmt = oci_parse($conn, "drop table scott.hallo");
oci_execute($stmt);
echo $conn . " dropped table\n\n";
}
function insert_data($conn)
{
$stmt = oci_parse($conn, "insert into scott.hallo
values('$conn' || ' ' || to_char(sysdate,'DD-MON-YY HH24:MI:SS'))");
oci_execute($stmt, OCI_DEFAULT);
echo $conn . " inserted hallo\n\n";
}
function delete_data($conn)
{
$stmt = oci_parse($conn, "delete from scott.hallo");
oci_execute($stmt, OCI_DEFAULT);
echo $conn . " deleted hallo\n\n";
}
function commit($conn)
{
oci_commit($conn);
echo $conn . " committed\n\n";
}
function rollback($conn)
{
oci_rollback($conn);
echo $conn . " rollback\n\n";
}
function select_data($conn)
{
$stmt = oci_parse($conn, "select * from scott.hallo");
oci_execute($stmt, OCI_DEFAULT);
echo $conn . "----selecting\n\n";
while (oci_fetch($stmt)) {
echo $conn . " <" . oci_result($stmt, "TEST") . ">\n\n";
}
echo $conn . "----done\n\n";
}
create_table($c1);
insert_data($c1);
select_data($c1);
select_data($c2);
rollback($c1);
select_data($c1);
select_data($c2);
insert_data($c2);
commit($c2);
select_data($c1);
delete_data($c1);
select_data($c1);
select_data($c2);
commit($c1);
select_data($c1);
select_data($c2);
drop_table($c1);
echo "</pre></html>";
?>
Nota: In PHP versions before 5.0.0 you must use ocinlogon() instead. The old function name can still be used in current versions, however it is deprecated and not recommended.
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