ORA-29701: Unable To Connect To Cluster Synchronization Service reported on ASM alert log in RAC on Windows

(Doc ID 2349725.1)

Last updated on FEBRUARY 01, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Microsoft Windows x64 (64-bit)

Symptoms

ASM alert.log reports the following error:

ORA-17503: ksfdopn:2 Failed to open file +DATA/orapwasm
ORA-29701: unable to connect to Cluster Synchronization Service
Sun Dec 24 05:23:29 2017
Errors in file D:\APP\GRID\diag\asm\+asm\+asm\trace\+asm_ora_13504.trc:
ORA-17503: ksfdopn:2 Failed to open file +DATA/orapwasm
ORA-29701: unable to connect to Cluster Synchronization Service
Sun Dec 24 05:38:29 2017
Errors in file D:\APP\GRID\diag\asm\+asm\+asm\trace\+asm_ora_9952.trc:
ORA-17503: ksfdopn:2 Failed to open file +DATA/orapwasm
ORA-29701: unable to connect to Cluster Synchronization Service

 

Changes

 Microsoft changed the default ports in Win2k8 and onward, that are used by bind(0) calls to obtain a port.

Cause

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