Database - RAC/Scalability (MOSC)

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how does asm finds file creation path?

edited Apr 22, 2017 5:36PM in Database - RAC/Scalability (MOSC) 2 commentsAnswered

We see that in asm we just need to provide the disk group, and asm itself finds the directory and creates a file there.

For example.

SQL> create spfile='+DATA' from pfile='/u01/app/oracle/product/11.2.0/grid/dbs/init+ASM.ora';

File created.

I just gave data and it chose directory +DATA/asm/asmparameterfile inside this DG. Similar happens for datafile creation.

My question:-

how does asm decide the directory path? is there any parameter in OCR/OLR? surely we are not using any db_create_file_dest parameter.

Please suggest.

asm parameter file as as below:-

+ASM.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from in memory value

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