This note describes the procedure of upgrading the 10g ASM to 11g Release 2 ASM on an HP UX 64 bit platform.
The procedure of upgrading the ASM in 11g R2 is a bit different to the procedure used to upgrade ASM to 126.96.36.199 or 188.8.131.52.
In 11g R2, ASM is now included as part of the 11gR2 Grid Infrastructure software and we use ASMCA GUI tool to administer ASM and not the DBCA which we used in 10g.
Also, it should be noted that an Oracle 10g database can still connect to and use the 11g ASM disk groups.
We can define the ASM as well as database compatibility levels via attributes of the ASM disk groups as we see in the note.