What do these parameters in the alert.log mean /* db agent *//* {0:18:35} */

We've had 3 of our RACOne databases on exadata relocate mysteriously on us a few weeks ago.

This is a 2 node RAC.

From what I can see, if we were to stop the database via svrctl it shows something like this:

    ALTER DATABASE DISMOUNT /* db agent *//* {2:41888:31074} */

The first digit seems to represent the node in which I ran the command - it shows either 1 or 2.

Howoever, when the databases mysteriously relocated we can see really low digits, including 0 for the first leading digit:

    ALTER DATABASE MOUNT /* db agent *//* {0:18:35} */

Does anyone know what these codes all mean? I can't get Oracle support to give me the RCA. There are no errors in any of the logs - alert.log, ASM, cell, o/s.

Thanks in advance,

Leng.

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