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Instance Startup Fails Without NTS Authentication For ASM On Windows (Doc ID 275686.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Server - Enterprise Edition - Version: to
Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows Server 2003
Microsoft Windows (32-bit)


When ASM Service is started without
in sqlnet.ora, startup of database instance(s) fail as follows:

SQL> startup
ORA-17503:ksfdopn:2 Failed to open file +//spfile.ora
ORA-015055: unable to connect to ASM instance
ORA-01031: insufficent privileges

The problem does not happen when
is set sqlnet.ora during starting up of the ASM Instance.


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