java - Auto Increment in hibernate using oracle -


i new hibernate , want insert primary number in table unique identification. using oracle database need create sequence in oracle auto increment generation number ?

i using below code not working. have not created sequence yet.

 @id  @column(name = "id" )  @generatedvalue ( strategy = generationtype.table)

i have used auto, sequence , identity nothing works me.

this 1 way of using oracle sequence in jpa mapped entity:

@id @column(name = "id") @generatedvalue(strategy = generationtype.sequence, generator = "sequence_name") @sequencegenerator(name = "sequence_name", sequencename = "sequence_name", allocationsize = 1, initialvalue = 1)

in way persist() method ask next value of sequence in order use id entry.


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