PLS-00587: a static method cannot be invoked on an instance value
Cause: An attempt was made to use an object instance value, not a typename, as the qualifier of the name of a method invocation, but only a typename can be used as the qualifier when calling a static method.
Action: Use the typename, not an object instance value, to qualify the name of a method if the method is static.
Cause: An attempt was made to use an object instance value, not a typename, as the qualifier of the name of a method invocation, but only a typename can be used as the qualifier when calling a static method.
Action: Use the typename, not an object instance value, to qualify the name of a method if the method is static.
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