How do you update sequence values in Oracle?

1 year ago
Jackson Davis
1 minute

To update the value of an Oracle sequence, you can follow these steps:

  1. Modify sequence properties, such as INCREMENT BY, MINVALUE, MAXVALUE, and START WITH, using the ALTER SEQUENCE statement. For example:
ALTER SEQUENCE seq_name INCREMENT BY 1;
  1. Recreate the sequence using the CREATE OR REPLACE SEQUENCE statement. For example:
CREATE OR REPLACE SEQUENCE seq_name START WITH 100;
  1. Use the SETVAL function to set the current value of a sequence. For example:
SELECT seq_name.NEXTVAL FROM DUAL;
SELECT seq_name.CURRVAL FROM DUAL;
SELECT seq_name.NEXTVAL FROM DUAL;
SELECT seq_name.CURRVAL FROM DUAL;

SELECT seq_name.NEXTVAL FROM DUAL;
SELECT seq_name.CURRVAL FROM DUAL;
SELECT seq_name.NEXTVAL FROM DUAL;
SELECT seq_name.CURRVAL FROM DUAL;

SELECT seq_name.NEXTVAL FROM DUAL;
SELECT seq_name.CURRVAL FROM DUAL;
SELECT seq_name.NEXTVAL FROM DUAL;
SELECT seq_name.CURRVAL FROM DUAL;

Please be aware that updating the sequence values may affect other objects in the database, so make sure to understand its repercussions before updating the sequence values.

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