db2_pconnect
Returns a persistent connection to a database
&reftitle.description;
resourcedb2_pconnect
stringdatabase
stringusername
stringpassword
arrayoptions
Returns a persistent connection to an IBM DB2 Universal Database, IBM
Cloudscape, or Apache Derby database. For more information on persistent
connections, refer to .
Calling db2_close on a persistent connection always
returns &true;, but the underlying DB2 client connection remains open and
waiting to serve the next matching db2_pconnect
request.
Note that you are strongly urged to only use persistent connections on
connections with autocommit turned on. If you attempt to combine
transactions with persistent connections, issuing
db2_commit or db2_rollback
against a persistent connection will affect every persistent connection
that is currently using the same underlying DB2 client connection. You may
also rapidly experience locking escalation if you do not use autocommit for
your persistent connections.
&reftitle.parameters;
database
The database alias in the DB2 client catalog.
username
The username with which you are connecting to the database.
password
The password with which you are connecting to the database.
options
An associative array of connection options that affect the behavior
of the connection, where valid array keys include:
autocommit
Passing the DB2_AUTOCOMMIT_ON value turns
autocommit on for this connection handle.
Passing the DB2_AUTOCOMMIT_OFF value turns
autocommit off for this connection handle.
&reftitle.returnvalues;
Returns a connection handle resource if the connection attempt is
successful. db2_pconnect tries to reuse an existing
connection resource that exactly matches the
database, username, and
password parameters. If the connection attempt fails,
db2_pconnect returns &false;.
&reftitle.examples;
A db2_pconnect example
In the following example, the first call to
db2_pconnect returns a new persistent connection
resource. The second call to db2_pconnect returns
a persistent connection resource that simply reuses the first persistent
connection resource.
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&example.outputs;
&reftitle.seealso;
db2_connect