Using connection parameters

Following is a list of connection parameters apart from the DSN parameter that can be supplied to the ASE ODBC Driver.

Table 2-1: Connection parameters

Property names

Description

Required

Default value

UID, UserID

A case-sensitive user ID required to connect to the ASE server.

Yes

Empty

PWD, Password

A case-sensitive password to connect to the ASE server.

No, if the user name does not require a password

Empty

Server

The name or the IP address of the ASE server.

Yes

Empty

Port

The port number of ASE server.

Yes

Empty

Database

The database to which you want to connect.

No

Empty

UseCursor

Specifies whether cursors are to be used by the driver. 0 indicates do not use cursors and 1 indicates use cursors.

No

0

ApplicationName

The name to be used by ASE to identify the client application.

No

Empty

PacketSize

The number of bytes per network packet transferred between ASE and the client.

No

512

CharSet

The designated character set. The specified character set must be installed on the ASE server.

No

Empty

Language

The language in which ASE returns error messages.

No

Empty – ASE uses English by default

Encryption

The designated encryption. Possible values: ssl.

No

Empty

TrustedFile

If encryption is set to ssl, this property should be set to the path to the Trusted File.

No

Empty

DSURL

The URL to the LDAP server.

No

Empty

DSPrincipal

The user name used to authenticate on the LDAP server, if the LDAP server does not allow anonymous access. The principal can be specified in the DSURL as well.

No

Empty

DSPassword

The password used to authenticate on the LDAP server, if the LDAP server does not allow anonymous access. The password can be specified in the Directory Service URL (DSURL) as well.

No

Empty

DynamicPrepare

When set to 1 the driver sends SQLPrepare calls to ASE to compile/prepare. This can boost performance if you reuse the same query over and over again.

No

0

LoginTimeOut

Number of seconds to wait for a login attempt before returning to the application. If set to 0, the timeout is disabled and a connection attempt waits for an indefinite period of time.

No

10

QuotedIdentifier

Specifies if ASE treats character strings enclosed in double quotes as identifiers. 0 indicates do not enable quoted identifiers, 1 indicates enable quoted identifiers.

No

0

HASession

Specifies if high availability is enabled. 0 indicates high availability disabled, 1 high availability enabled.

No

0

SecondaryServer

The name or the IP address of the ASE server acting as a failover server in an active-active or active-passive setup.

Yes, if HASession is set to 1

Empty

SecondaryPort

The port number of the ASE server acting as a failover server in an active-active or active-passive setup.

Yes, if HASession is set to 1

Empty

EncryptedPassword

Specifies if password encryption is enabled. 0 indicates password encryption is disabled, 1 indicates password encryption is enabled.

No

0

BufferPoolSize

Keeps the input / output buffers in pool. When large results will occur, increase this value to boost performance.

No

20

CRC

By default the driver returns the total records updated when multiple update statements are executed in a stored procedure. This count will also include all updates happening as part of the triggers set on an update or an insert.

Set this property to 0 if you want the driver to return only the last update count.

No

1

ClientHostName

The name of the client host passed in the login record to the server.

No

Empty

ClientHostProc

The identity of client process on this host machine passed in the login record to the server.

No

Empty

TextSize

The maximum size of binary or text data that will be sent over the wire.

No

Empty. ASE default is 32K.

AnsiNull

Strict ODBC compliance where you cannot use “= NULL.” Instead, you must use “IsNull.”

No

1

ServerInitiated Transactions

When SQL_ATTR_AUTOCOMMIT is set to ‘1’, Adaptive Server starts managing transactions as needed. The driver issues a “set chained on” command on the connection. Older ODBC Drivers do not make use of this feature and manage the job of starting transactions. Set this property to’'0’, if you want to maintain the old behavior or require that your connection not use “chained” transaction mode.

No

1