Database Error Messages

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Updated
Jun 24, 2024

ORA-04055

Aborted: "string" formed a non-REF mutually-dependent cycle with "string".

Cause

This compilation was aborted because the library unit that was compiled would have formed a non-REF mutually-dependent cycle with some other library units. This happens when an attempt is made to compile types that have attributes of other types that may participate in a cycle with this type. For example: create type t1; create type t2 (a t1); create type t1 (a t2);


Action

Break the cycle (possibly by adding a REF or by using another type).