1. Oracle 11g asm
Pfile parameter file path $ ORACLE_HOME/dbs/init + ORACLE_SID.ora for example ORACLE_SID = + ASM
Pfile $ ORACLE_HOME/dbs/init + ASM. ora
The content is as follows:
*. Asm_diskstring = '/dev/sda2'
*. Asm_diskgroups = 'dgasm1'
*. Asm_power_limit = 1
*. Diagnostic_dest = '/opt/app/oracle'
*. Instance_type = 'asm'
*. Large_pool_size = 12 M
*. Remote_login_passwordfile = 'clusive'
*. Asm_diskgroups = 'dgasm1 'is the disk group automatically loaded when the asm instance is started. If this parameter is not set, the asm instance can only be started, but not the asm disk group, you can only manually mount the asm disk group later.
If the spfile file is not used when the asm instance is started, but the pfile file is not used, but the default file is used, we can manually create the pfile file and then generate the spfile file in create. The spfile file is located on the asm disk.