Sequence cache option : Sequence Properties « Sequence « Oracle PL / SQL

1. Oracle PL / SQL
2. Sequence
3. Sequence Properties

Sequence cache option

SQL>
SQL> -- the cache option specifies how many sequence values will be stored in memory for 
faster access
SQL>
SQL>
SQL> CREATE SEQUENCE mySequence
  2      MINVALUE 1
  3      MAXVALUE 999999999999999999999999999
  4      START WITH 1
  5      INCREMENT BY 1
  6      CACHE 20;

Sequence created.

SQL>
SQL> select mySequence.nextval from dual;

   NEXTVAL
----------
         1

SQL> select mySequence.nextval from dual;

   NEXTVAL
----------
         2

SQL> select mySequence.nextval from dual;

   NEXTVAL
----------
         3

SQL> select mySequence.nextval from dual;

   NEXTVAL
----------
         4

SQL>
SQL> drop sequence mySequence;

Sequence dropped.

SQL>
SQL>
           
       

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