EXPDP / IMPDP from ASM Diskgroup in Oracle
You need to point the Directory to the ASM diskgroup for creating datapump backup in Oracle ASM.
1. Create a directory pointing to ASM diskgroup
SQL> create directory ASMDIRECTORY as '+DISK1/TEST/TEMPFILE';
Directory created
2. EXPDP command for export into the ASM disk is same:
EXPDP dumpfile=test.dmp logfile=test.log directory=ASMDIRECTORY tables=HR.EMPLOYEES