How to fix the Oracle error SQL-02154: Invalid or unset data type for host variable in ANSI Dynamic?

In this post, you’ll learn more about the Oracle ErrorSQL-02154: Invalid or unset data type for host variable in ANSI Dynamic with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

SQL-02154: Invalid or unset data type for host variable in ANSI Dynamic

Reason for the Error SQL-02154: Invalid or unset data type for host variable in ANSI Dynamic

Cause: An ANSI Dynamic SET statement with item name DATA was encountered with out a valid TYPE having been previously set and option mode=ansi was used

How to fix the Error SQL-02154: Invalid or unset data type for host variable in ANSI Dynamic ?

You can fix this error in Oracle by following the below steps

Action: With mode=ansi, you must set the TYPE before setting the DATA. Issue a SET statement with correct item TYPE or, for output issue a DESCRBE to set the item type. Or use mode=oracle which allows the type to default to the type of the bind/define host variable