PLS-00498: illegal use of a type before its declaration

PLS-00498: illegal use of a type before its declaration
Cause: A variable or constant was declared to be of a type whose declaration appears later in the compilation unit; or, a type or subtype was declared in terms of another type whose declaration appears later in the compilation unit.
Action: Ensure that the type declaration preceeds its use in the variable/ constant/type declaration.

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小智 2018-08-30 19:02

PLS-00498：在声明之前非法使用一种类型,
.原因：变量或常量被声明为一种类型，其声明稍后出现在编译单元中; 或者，类型或子类型被声明为另一种类型，其声明稍后出现在编译单元中。,
.操作：确保类型声明在变量/常量/类型声明中被使用。,
.

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PLS-00498: illegal use of a type before its declaration

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