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><H1
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>oci_pconnect</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN154125"
></A
><P
> (PHP 5)</P
>oci_pconnect -- Connect to an Oracle database using a persistent connection</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN154128"
></A
><H2
>Descrição</H2
>resource <B
CLASS="methodname"
>oci_pconnect</B
> ( string username, string password [, string db [, string charset [, int session_mode]]] )<BR
></BR
><P
> Creates a persistent connection to an Oracle server and logs on.
</P
><P
> Persistent connections are cached and re-used between requests, resulting
in reduced overhead on each page load; a typical PHP application will have
a single persistent connection open against an Oracle server per Apache
child process (or PHP FastCGI/CGI process). See the <A
HREF="features.persistent-connections.html"
>Persistent Database
Connections</A
> section for more information.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN154151"
></A
><H2
>Parâmetros</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>username</CODE
></DT
><DD
><P
> The Oracle user name.
</P
></DD
><DT
><CODE
CLASS="parameter"
>password</CODE
></DT
><DD
><P
> The password for <CODE
CLASS="parameter"
>username</CODE
>.
</P
></DD
><DT
><CODE
CLASS="parameter"
>db</CODE
></DT
><DD
><P
> This optional parameter can either contain the name of the local
Oracle instance or the name of the entry in
<TT
CLASS="filename"
>tnsnames.ora</TT
>.
</P
><P
> If the not specified, PHP uses environment variables
<TT
CLASS="literal"
>ORACLE_SID</TT
> and <TT
CLASS="literal"
>TWO_TASK</TT
> to
determine the name of local Oracle instance and location of
<TT
CLASS="filename"
>tnsnames.ora</TT
> accordingly.
</P
></DD
><DT
><CODE
CLASS="parameter"
>charset</CODE
></DT
><DD
><P
>Com o Oracle server 9.2 e seguintes, você pode
indicar o parâmetro <CODE
CLASS="parameter"
>charset</CODE
>, 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.</P
></DD
><DT
><CODE
CLASS="parameter"
>session_mode</CODE
></DT
><DD
><P
> This parameter is available since version 1.1 and accepts the
following values: <TT
CLASS="constant"
><B
>OCI_DEFAULT</B
></TT
>,
<TT
CLASS="constant"
><B
>OCI_SYSOPER</B
></TT
> and <TT
CLASS="constant"
><B
>OCI_SYSDBA</B
></TT
>.
If either <TT
CLASS="constant"
><B
>OCI_SYSOPER</B
></TT
> or
<TT
CLASS="constant"
><B
>OCI_SYSDBA</B
></TT
> 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 <A
HREF="missing-stuff.html#ini.oci8.privileged_connect"
>oci8.privileged_connect</A
>
to <TT
CLASS="literal"
>On</TT
>.
</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN154194"
></A
><H2
>Valores de retornado</H2
><P
> Returns a connection identifier or <TT
CLASS="constant"
><B
>FALSE</B
></TT
> on error.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN154198"
></A
><H2
>Notas</H2
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
Starting with version 1.1 of the oci8 extension, the lifetime and
maximum amount of persistent Oracle connections can be tuned by setting
the following configuration values: <A
HREF="missing-stuff.html#ini.oci8.persistent_timeout"
>oci8.persistent_timeout</A
>,
<A
HREF="missing-stuff.html#ini.oci8.ping_interval"
>oci8.ping_interval</A
> and
<A
HREF="missing-stuff.html#ini.oci8.max_persistent"
>oci8.max_persistent</A
>.
</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
If you're using PHP with Oracle Instant Client, you can use easy connect
naming method described here:
<A
HREF="http://download-west.oracle.com/docs/cd/B12037_01/network.101/b10775/naming.htm#i498306"
TARGET="_top"
>http://download-west.oracle.com/docs/cd/B12037_01/network.101/b10775/naming.htm#i498306</A
>.
Basically this means you can specify "//db_host[:port]/database_name"
as database name. But if you want to use the old way of naming you
<SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>must</I
></SPAN
> set either <TT
CLASS="constant"
><B
>ORACLE_HOME</B
></TT
> or
<TT
CLASS="constant"
><B
>TNS_ADMIN</B
></TT
>.
</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
In PHP versions before 5.0.0 you must use <A
HREF="function.ociplogon.html"
><B
CLASS="function"
>ociplogon()</B
></A
> instead.
This name still can be used, it was left as alias of
<B
CLASS="function"
>oci_pconnect()</B
> for downwards compatability.
This, however, is deprecated and not recommended.
</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN154215"
></A
><H2
>Veja também</H2
><P
> <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.oci-connect.html"
><B
CLASS="function"
>oci_connect()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.oci-new-connect.html"
><B
CLASS="function"
>oci_new_connect()</B
></A
></TD
></TR
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