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SQL Anywhere 11.0.1 (Français) » SQL Anywhere Server - SQL Usage » Remote Data and Bulk Operations » Server classes for remote data access » ODBC-based server classes

 

Server class aseodbc

A server with server class aseodbc is a Sybase SQL Server and Adaptive Server Enterprise (version 10 and later) database server. SQL Anywhere requires the installation of the Adaptive Server Enterprise ODBC driver and Open Client connectivity libraries to connect to a remote Adaptive Server Enterprise server with class aseodbc, but the performance is better than with the asejdbc class.

Notes
  • Open Client should be version 11.1.1, EBF 7886 or later. Install Open Client and verify connectivity to the Adaptive Server Enterprise server before you install ODBC and configure SQL Anywhere. The Sybase ODBC driver should be version 11.1.1, EBF 7911 or later.

  • The local setting of the quoted_identifiers option controls the use of quoted identifiers for Adaptive Server Enterprise. For example, if you set the quoted_identifiers option to Off locally, then quoted identifiers are turned off for Adaptive Server Enterprise.

  • Configure a user data source in the Configuration Manager with the following attributes:

    • General tab   Type any value for Data Source Name. This value is used in the USING clause of the CREATE SERVER statement.

      The server name should match the name of the server in the Sybase interfaces file.

      For more information about the interfaces file, see The interfaces file.

    • Advanced tab   Select the Application Using Threads and Enable Quoted Identifiers options.

    • Connection tab   Set the charset field to match your SQL Anywhere character set.

      Set the language field to your preferred language for error messages.

    • Performance tab   Set the Prepare Method to 2-Full.

      Set the Fetch Array Size as large as possible for the best performance. This increases memory requirements since this is the number of rows that must be cached in memory. Adaptive Server Enterprise recommends using a value of 100.

      Set Select Method to 0-Cursor.

      Set Packet Size to as large a value as possible. Adaptive Server Enterprise recommends using a value of -1.

      Set Connection Cache to 1.

Data type conversions: ODBC and Adaptive Server Enterprise

When you issue a CREATE TABLE statement, SQL Anywhere automatically converts the data types to the corresponding Adaptive Server Enterprise data types. The following table describes the SQL Anywhere to Adaptive Server Enterprise data type conversions.

SQL Anywhere data type Adaptive Server Enterprise default data type
BIT bit
TINYINT tinyint
SMALLINT smallint
INT int
INTEGER integer
DECIMAL [defaults p=30, s=6] numeric(30,6)
DECIMAL(128,128) not supported
NUMERIC [defaults p=30 s=6] numeric(30,6)
NUMERIC(128,128) not supported
FLOAT real
REAL real
DOUBLE float
SMALLMONEY numeric(10,4)
MONEY numeric(19,4)
DATE datetime
TIME datetime
TIMESTAMP datetime
SMALLDATETIME datetime
DATETIME datetime
CHAR(n) varchar(n)
CHARACTER(n) varchar(n)
VARCHAR(n) varchar(n)
CHARACTER VARYING(n) varchar(n)
LONG VARCHAR text
TEXT text
BINARY(n) binary(n)
LONG BINARY image
IMAGE image
BIGINT numeric(20,0)