PacketSize (ASE, DIR, SNC, SYC)

Description

When connecting to a database, specifies the packet size in bytes that you want the server to set for transferring data to and from your PowerBuilder application. A packet is a fixed-size chunk of data for sending information over a network.

If the server has space limitations, it sets the packet size to less than the specified PacketSize value. Otherwise, it sets the size equal to the PacketSize value. The default value is 512 bytes.

NoteWhen to specify PacketSize You must specify the PacketSize parameter before connecting to the database.

Applies to

Syntax

PacketSize=value

Parameter

Description

value

A value specifying the packet size in bytes that a database server sets for transferring data to and from your application. The value must be a multiple of 512 bytes (default=512 bytes).

Default

PacketSize=512 (4096 for SNC)

Usage

When to set If your PowerBuilder application sends or receives large amounts of text or image data from the server, setting the PacketSize value larger than the default 512 bytes might speed performance by causing fewer network read and write operations.

Adaptive Server Enterprise and DirectConnect Before setting PacketSize for use with an Adaptive Server Enterprise or DirectConnect database, you or your system administrator must set the following configuration variables on the server for PacketSize to take effect:

For instructions on setting these configuration variables, see your database documentation.

Examples

Example 1

To specify that the database server should set the packet size equal to or less than 2048 bytes: