https://dwgeek.com/netezza-alter-user-command-examples.html/ Once you created a user, you can change the parameters of the user at any time with Netezza ALTER USER command. You can read my other post Netezza CREATE USER command and examples. Netezza Alter User Command Syntax In the Netezza, username, database name and group name are unique. You cannot have same user as the group name. Read: IBM Netezza Alter Table Command and Examples How to Resolve Netezza too many Concurrent Sessions issue? Netezza Create User Command and Examples Syntax for altering a user: ALTER USER username [WITH [PASSWORD {'string' | NULL }] [SYSID uid] [ROWSETLIMIT [integer ] [IN GROUP groupname [, ...] ] [VALID UNTIL 'date' ] [SESSIONTIMEOUT [integer ] [QUERYTIMEOUT [integer ] [DEFPRIORITY [critical|high|normal|low|none]] [MAXPRIORITY [critical|high|normal|low|none]] [IN RESOURCEGROUP resourcegroupname] [EXPIRE PASSWORD] ] | CONCURRENT SESSIONS <limit> | ALLOW CROSS JOIN [TRUE|FALSE|NUL...