ASM with Oracle10 cannot see disks on Solaris

Question

Hi,
I just installed Oracle10g on Solaris-64 and first thing I tried was to create database using ASM. Seems, ASM cannot find any disks though all 6 of them are available. I tried different ways, but there is no result so far. Any idea what am I doing wrong?
-Dmitri

Answer 1

Ooh, ooh. I did. :)
I had the same problem. Permissions and ownership were set correctly. The path to the disk was set. I could “see’ and touch the disk as the oracle user. But, dbca saw nothing. Connecting to the adm instance and using the gui to create the diskgroup failed to see the disk. After MUCH searching on Oracle’s sites (otn & metalink) I found this note “Create Partitions in Solaris and add them as disks in ASM 271621.1” metalink. It is not really clear way there needs to be “500 MB” in slice 0 on a Solaris partition, I tried it at 10MB and found it worked with either slice 4 (the recommendation from the note) or slice 6 (the one that almost everyone working with Solaris [other than this note’s author] uses). The size may be much smaller. Oracle must be doing something in slice 0, but I don’t know what it is.
Anyway, after partitioning the disk and reserving 10MB in slice 0, the disk did show up in dbca. I am about to reinstall Oracle and try from the beginning.
My next challenge is how do I place the control files and online redo logs on a different diskgroup than the main database. I did not see a way in dbca to manage this.
HTH
James