Database moved to Oracle and all primary row keys. It requires exactly new values ​​to add. How correctly mappit?

Error saving this crashes.
All keys are strings. There is no possibility to switch to another type only varchar2

 @GenericGenerator (name = "STRING_SEQUENCE_GENERATOR", strategy = "de.kvwl.abrechnung.gostamm.transfer.model.StringSequenceGenerator", parameters = { @Parameter (name = "STRING_SEQUENCE_GENERATOR", value = "SEQ_GNR") }) @GeneratedValue (strategy = GenerationType.SEQUENCE, generator = "STRING_SEQUENCE_GENERATOR") 

Type SequenceStyleGenerator tried to use for mapping.

Does not exceed. Hibernate issues an "unknown sequence" error. How to make a mistake? I would be grateful in advance.

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