Oracle Database Errors or Warnings from Error ORA-30747 to ORA-30756

SQLServerF1

ORA-30747: cannot create substitutable tables or columns of non final type string.string
Cause: The user tried to create substitutable table or column of a non final type. This operation is not currently supported.
Action: Change the statement to create a non substitutable table/column.
ORA-30748: column string already enabled to store objects of type string.string
Cause: The user is trying to enable a column to store instances of a type for which it is already enabled.
Action: None
ORA-30749: column string not enabled to store objects of type string.string
Cause: The user is trying to disable a column from storing instances of a type for which it is already enabled.
Action: None

ORA-30750: cannot enable column string to store objects of type string.string
Cause: The user is trying to enable a column to store instances of a subtype. The error is raised due to one of the following :
Action: Fix the cause of the error and retry the operation.
ORA-30751: cannot disable column string from storing objects of type string.string
Cause: The user is trying to drop a type from being stored in a substitutable column or table. This error is raised due to one of the following reasons :
– the column is enabled to store instances of some subtype of the type being dropped.

– the column is enabled to store instances of only one type

Action: Fix the cause of the error and retry the operation.
ORA-30752: column or table string is not substitutable
Cause: The user is performing an operation that is not allowed on non substitutable column or table.
Action: None

ORA-30753: column or table string is substitutable
Cause: The user is performing an operation that is not allowed on substitutable column or table.
Action: None
ORA-30754: column or table string stores objects of only one type
Cause: The user is trying to perform an operation that is not allowed on object column or table that is enabled to store instances of a single type.
Action: None
ORA-30755: error during expansion of view hierarchy
Cause: There was an error while trying to expand a view hierarchy. This could be due to invalid subviews (or subviews with errors)
Action: Ensure that all subviews are valid e.g. alter view … compile and retry the operation.
ORA-30756: cannot create column or table of type that contains a supertype attribute
Cause: The user tried to create a column or table of an object type that contains a supertype attribute. This is not supported because it leads to infinite recursion in our current storage model. Note that creating a column of a type implies that we create columns corresponding to all subtype attributes as well.
Action: Change the type definition to contain a supertype REF attribute instead of the supertype object attribute.

Above are list of Oracle Database Errors or Warnings from Error ORA-30747 to ORA-30756 received while performing certain operation against Oracle Database or related products.

What are Oracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database. Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.

Hope this was helpful.

Thanks,
SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.

 

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