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This article mainly introduces the example analysis of the oracle sequence reaching the maximum value, which has a certain reference value, and interested friends can refer to it. I hope you will gain a lot after reading this article.

The client found that the sequence on a large table reached the maximum, reported an error and asked for help to check it.

Set linesize 180

Set long 90000

SELECT dbms_metadata.get_ddl ('SEQUENCE',' SEQUENCE_NAME','TABLENAME') FROM DUAL

It is estimated that the statement created at that time set the maximum value, which has now been reached, and the business rule does not allow loops:

Create sequence sequence_name start with 1 increment by 1 maxvalue 2147483647

What is the default maximum value for oracle? 999999999999999999999

Recommendations:

Adjust the sequence definition and specify a larger maximum value or use the default maximum value if the business does not allow recycling.

Alter sequence sequence_name nomaxvalue

Later, the default maximum value was used to solve the problem.

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