ORA-27506 Falied to start 2nd ASM Instance (Doc ID 1063663.1)

Last updated on MARCH 01, 2010

Applies to:

Oracle Server - Enterprise Edition - Version: 10.1.0.2 to 11.1.0.7 - Release: 10.1 to 11.1
Information in this document applies to any platform.

Symptoms

On a 11.1 2 node Windows RAC cluster, the 2nd ASM instance failed to start. Startup of the 1st ASM instance worked fine, however when starting the 2nd ASM instance, it hangs for a while, then fails. The 1st ASM instance reports the following error:
ORA-27506: IPC error connecting to a port

ERROR: LMON (ospid: 484) detects hung instances during IMR reconfiguration
Remote instance kill is issued [2:1]: 2 

ASM alert logs show:
alert_+asm1.log
---------------
Wed Jan 20 20:23:39 2010
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Interface type 1 PRIVRAC 10.1.11.0 configured from OCR for use as a cluster interconnect
Interface type 1 LAN 10.1.10.0 configured from OCR for use as a public interface
..
Cluster communication is configured to use the following interface(s) for this instance
10.1.11.3
cluster interconnect IPC version:Oracle 11 Winsock2 TCP/IP IPC
IPC Vendor 1 proto 1
Version 1.0

Wed Jan 20 20:23:42 2010
GMON started with pid=17, OS id=4100
lmon registered with NM - instance id 1 (internal mem no 0)
Reconfiguration started (old inc 0, new inc 2)
ASM instance
List of nodes:
0

Wed Jan 20 20:24:29 2010
Errors in file d:\app\administrator\diag\asm\+asm\+asm1\trace\+asm1_dia0_3924.trc:
ORA-27506: IPC error connecting to a port
Wed Jan 20 20:24:29 2010
Errors in file d:\app\administrator\diag\asm\+asm\+asm1\trace\+asm1_diag_3696.trc:
ORA-27506: IPC error connecting to a port
..
Wed Jan 20 20:27:58 2010
Errors in file d:\app\administrator\diag\asm\+asm\+asm1\trace\+asm1_diag_3696.trc:
ORA-27506: IPC error connecting to a port
Wed Jan 20 20:28:19 2010
ERROR: LMON (ospid: 484) detects hung instances during IMR reconfiguration
Remote instance kill is issued [2:1]: 2
Reconfiguration started (old inc 2, new inc 4)
List of nodes:
0

alert_+asm2.log
---------------
Wed Jan 20 20:23:57 2010
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Interface type 1 PRIVRAC 10.1.11.0 configured from OCR for use as a cluster interconnect
WARNING 10.1.11.0 could not be translated to a network address error 1
Interface type 1 LAN 10.1.10.0 configured from OCR for use as a public interface
WARNING: No cluster interconnect has been specified. Depending on
the communication driver configured Oracle cluster traffic
may be directed to the public interface of this machine.
Oracle recommends that RAC clustered databases be configured
with a private interconnect for enhanced security and
performance.

Cluster communication is configured to use the following interface(s) for this instance
192.168.10.4
cluster interconnect IPC version:Oracle 11 Winsock2 TCP/IP IPC
IPC Vendor 1 proto 1
Version 1.0

Wed Jan 20 20:23:58 2010
GMON started with pid=17, OS id=3392
Wed Jan 20 20:24:23 2010
lmon registered with NM - instance id 2 (internal mem no 1)
Wed Jan 20 20:42:35 2010
Starting ORACLE instance (normal)

Changes

New installation

Cause

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