Hi everyone.
 I’m upgrading the PostgreSQL version from 12 to 16 using pg_upgrade utility 
with -k option. After upgrading the database, before starting any application 
processing, on checking the last value of some sequences, the value has been 
changed to a value different from the original value. Not all but some of the 
sequences have modified value. I’ve repeated the upgrade several times and each 
time the same sequences have changed with the same values. I’ve expected that 
the upgrade would not interfere with the application data … 
This is the upgrade command:

/usr/pgsql-16/bin/pg_upgrade \
—old-datadir=/u01/pgrdb/12/app \
—new-data for=/u01/pgrdb/16/app \
—old-bindir=/usr/pgsql-12/bin \
—new-bindir=/usr/pgsql-16/bin \
-k

Best regards,
Dănuț Soare



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