Oracle Database Errors or Warnings from Error ORA-30727 to ORA-30736

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ORA-30727: duplicate referential constraint for a REF column
Cause: Multiple referential constraints were specified for a single REF column.
Action: Remove the duplicate referential constraint and retry the operation.
ORA-30728: maximum number of columns exceeded
Cause: Adding referential constraint on a REF column requires the the creation of an additional column.
Action: Drop some columns and retry the operation.
ORA-30729: maximum number of columns exceeded
Cause: Adding scope or referential constraint on a REF column requires the creation of additional columns if the target table’s object identifier is primary key based.
Action: Drop some columns and retry the operation.

ORA-30730: referential constraint not allowed on nested table column
Cause: An attempt was made to define a referential constraint on a nested table column.
Action: Do not specify referential constraints on nested table columns.
ORA-30731: scope constraint not allowed on nested table column when the nested table is being created
Cause: An attempt was made to define a scope constraint on a nested table column when the nested table is being created.
Action: Do not specify a scope constraint on a nested table column when creating it. Instead, specify it using the ALTER TABLE statement.
ORA-30732: table contains no user-visible columns
Cause: An attempt was made to query on a system table which has no user-visible columns.
Action: Do not query on a system table that has no user-visible columns.

ORA-30733: cannot specify rowid constraint on scoped ref column
Cause: An attempt was made to specify rowid constraint on a scoped REF column.
Action: Remove the rowid constraint and then retry the operation.
ORA-30734: cannot specify scope constraint on ref column with rowid
Cause: An attempt was made to specify scope constraint on a REF column with the rowid constraint.
Action: Remove the scope constraint and then retry the operation.
ORA-30735: cannot create multiple subtables of the same type under a supertable
Cause: An attempt was made to create under a supertable (superview), a subtable(subview) of the same type as another existing subtable (subview).
Action: Drop the existing subtable(subview) and retry the operation.
ORA-30736: objects in a table or view hierarchy have to be in the same schema
Cause: An attempt was made to create a subtable(subview) under a supertable(superview) located in another schema.
Action: Connect as schema owner of the superobject and retry the operation.

Above are list of Oracle Database Errors or Warnings from Error ORA-30727 to ORA-30736 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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