Stored procedures   If you are using stored procedures in Oracle, you must select the Procedure Returns Results option for the Oracle ODBC driver.

See iAnywhere Solutions Oracle driver.

Session-wide variables   Oracle does not provide session-wide variables. You can store session-wide information in variables within Oracle packages. Oracle packages allow variables to be created, modified and destroyed; these variables may last as long as the Oracle package is current.

Autoincrement methods   To maintain primary key uniqueness, you can use an Oracle sequence to generate a list of keys similar to that of an autoincrement field. The CustDB sample database provides coding examples, which can be found in Samples\MobiLink\CustDB\custora.sql. Unlike autoincrement, however, you must explicitly reference the sequence. Autoincrement inserts a column value automatically if the column is not referenced in an INSERT statement.

Oracle does not support empty strings   In Oracle, an empty string is treated as null. In SQL Anywhere and UltraLite, empty strings have a different meaning from null. Therefore, you should avoid using empty strings in your client databases when you have an Oracle consolidated database.

CHAR columns   In Oracle, CHAR data types are fixed length and blank-padded to the full length of the string. In MobiLink remote databases (SQL Anywhere or UltraLite), CHAR is the same as VARCHAR: values are not blank-padded to a fixed width. It is strongly recommended that you use VARCHAR in the consolidated database rather than CHAR. If you must use CHAR, the mlsrv11 -b command line option can be used to remove trailing blanks from strings during synchronization. This option is important for string comparisons used to detect conflicts.

See -b option.

Data type mapping   The data types of columns must map correctly between your consolidated and remote database. For details, see Oracle data mapping.