Compatibility features for migration

You can enable these compatibility features by setting the precompiler option COMPATIBILITY_MODE to ORA. For example, the following command enables the compatibility features when you compile the file named tbsel.sqc:

$ db2 PRECOMPILE tbsel.sqc BINDFILE COMPATIBILITY_MODE ORA

The following features are supported when the COMPATIBILITY_MODE ORA precompile option is specified:

• Ability to specify the RELEASE option with EXEC SQL ROLLBACK and EXEC SQL COMMIT statements.
• Enhanced CONNECT statement syntax.
• Simple type definition for the VARCHAR type.
• Suppression of unspecified indicator variable error when the required NULL indicator is not specified and the UNSAFENULL YES option of the PRECOMPILE command is not set.
• Use of anonymous block to call a stored procedure.
• Use of C and C++ host variable arrays for FETCH INTO statements that are non-dynamic.
• Use of double quotation marks to specify file names with the INCLUDE statement.
• Use of INDICATOR variable arrays for FETCH INTO statements that are non-dynamic.
• Use of structure type, structure arrays, and structure indicator arrays.

Additionally, the following features are supported for C or C++ embedded SQL applications even if you do not issue the PRECOMPILE command with the COMPATIBILITY_MODE ORA option:

• Use of the STATICASDYNAMIC string for the GENERIC parameter of the BIND command to provide true dynamic SQL behavior for the package that is bound in a session.
• Use of a string literal with the PREPARE statement.
• Use of three-part name to call a stored procedure.
• Use of WHENEVER condition DO action statement.