How to find the next value of the identify column in db2?

There are 3ways to know the current value of the identity column generated value.

1. db2 "select identity_val_local() from sysibm.sysdummy1" or db2 "VALUES identity_val_local() "

the above assumes you are in the same session that incremented the identity value of the table.

2.

db2 "Select NEXTCACHEFIRSTVALUE from SYSCAT.COLIDENTATTRIBUTES 

 where TABSCHEMA='ORDB' and TABNAME='XINGTEST' "

( this gives you the next value available in memory cache that will be used for next identity value).

3– Extract the ddl of the table using db2look /

db2look -d NT018007 -e -nofed -t XINGTEST

CREATE TABLE "ORDB   "."XINGTEST"  (

"ID" INTEGER NOT NULL GENERATED BY DEFAULT AS IDENTITY (

STARTWITH +1

INCREMENT BY +1

MINVALUE +1

MAXVALUE +2147483647

NO CYCLE

NO CACHE

NO ORDER ) ,

"NAME" VARCHAR(50) )

IN "STAGING" ;

ALTER TABLE "ORDB

"."XINGTEST" ALTER COLUMN "ID"RESTART WITH 5;

Identity values are always incremented , they don’t get decremented. There might be unused value or gaps in between if a value was available in cache but not used and database got recycled in between.