SUN JES 8.1 Q2UR2: Intermittently application server jvm crashed.

Application server jvm intermittently crashed but due to the feature in SUN JES 8.1 ur2 the application server will auto restarts the service. Most of the JVM crashes were due to memory corruption.

The following are SUN findings:

1)Multithreading issue that causes 2 threads writing on the same memory block

2)Based on dtrace, it indicated that there was a race condition happens but the jvm doesn抰 crash during the occurrence.

Questions:

1) Is it possible that I can use dtrace to monitor the memory block or to find out the root cause?

System information:

Oracle:

DriverVersion: [10.2.0.1.0]

DriverMajorVersion: [10]

DriverMinorVersion: [2]

DriverName: [Oracle JDBC driver]

URL: [jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST= (ADDRESS=(PROTOCOL = TCP) (HOST = XXXXXX) (PORT = 1524)) (ADDRESS=(PROTOCOL = TCP) (HOST = XXXXXX) (PORT = 1524))) (CONNECT_DATA = (SID = CP_P)) (source_route=yes))]

UserName: [CP_P1]

Database Product Name: [Oracle]

Database Product Version: [Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production

With the Partitioning, OLAP and Oracle Data Mining options

JServer Release 9.2.0.6.0 - Production]

Database Product Major: [9]

Database Product Minor: [2]

Drivers: Type 4

JDK

JDBC Major: [10]

JDBC Minor: [2]

The JDK version is 1.5.0_02

SUN JES Application Server

Sun Java System Application Server Enterprise Edition 8.1_02 running under solaris 10

[1548 byte] By [csgan97a] at [2007-9-25]