UNABLE TO CREATE 4K SECTOR SIZE ASM DISK (ORA-15038) (Doc ID 1918508.1)

Last updated on FEBRUARY 21, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 to 11.2.0.3 [Release 11.2]
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on SPARC (64-bit)

Symptoms

 CREATE DISKGROUP TEST EXTERNAL REDUNDANCY DISK '/dev/rdsk/c7t6d0s6' SIZE 24G ATTRIBUTE
compatible.asm'='11.2.0.0.0','compatible.rdbms'='11.2.0.0.0','sector_size'='4096';
 
ERROR at line 1:
ORA-15018: diskgroup cannot be created
ORA-15038: disk '' mismatch on 'Sector Size' with target disk group [512] [4096]

Diskgroup created successfully with workaround _disk_sector_size_override=true, but still the v$asm_disk SECTOR_SIZE column shows as 512 instead of 4096

Cause

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