@[TOC](In this Document)

APPLIES TO:

Oracle Database - Enterprise Edition - Version 11.2.0.0. and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
Checked for relevance on 22-02-2013

GOAL

Trying to add a 2 TB disk to an ASM diskgroup

SOLUTION

In 11.2 a check was made to disallow creation of diskgroups with disks of size > 2tb.

If a disk > 2tb is used to create a diskgroup, ORA-15099 error will come up. 

Disk size greater than 2 TB can only be used on 12.1 release when  compatible.asm  and compatible.rdbms is set to  12.1  or higher.

REFERENCES

NOTE:1057333.1 - ORA-15018, ORA-15099 When Creating Diskgroup in ASM