Oracle 1z0-040: Oracle Database 10g: New Features for Administrators
#161. You want to implement ASM for the existing database instances and define the following parameters in the parameter file of the ASM instance. DB_UNIQUE_NAME = +ASM ASM_POEWR_LIMIT = 1 ASM_DISKSTRING = '/dev/dsk/*s2','?/dev/dsk/c1*' ASM_DISKGROUPS = dgroupA, dgroup B LARGE_POOL_SIZE = 8MB While starting the ASM interface, you get the following error message: ORA-15021: parameter "asm_diskstring" is not valid in RDBMS instance. And the instance startup fails. What causes the instance startup to fail?