[BUG] Kewastunpackstats (): Bad Magic 1 (0x..., 0), badmagicnumber

[BUG] Kewastunpackstats (): Bad Magic 1 (0x..., 0), badmagicnumber

 

Kewastunpackstats (): Bad Magic 1 (0x1108f7b87, 0) In Alert Logfile After Upgrading to 11.2.0.1

Applies to:Oracle Server - Enterprise Edition - Version: 9.2.0.8 and later [Release: 9.2 and later ]Informationinthis document applies to any platform.Kewastunpackstats(): Bad Magic 1 (0x1108f7b87, 0)inAlert Logfile After Upgrading to 11.2.0.1 SymptomsThe following message is reportedinthe instance alertfile: kewastUnPackStats(): bad magic 1 (0x1108f7b87, 0) CauseThe cause of this problem has been identifiedinBug:8967729whichhas been closedas duplicate of unpublished bug 8730312.It is caused by the variable part ofthe Active Session History rows (the moduile, action program, etc. information)not being stored properly, causing anyread-back of this data through views like(G)V$ACTIVE_SESSION_HISTORY to fail. SolutionThe issue has been fixedinthe upcoming Oracle12c release and the 11.2.0.2 and higher patchsets.The solution is toinstallthe 11.2.0.3 patchset(whichis the current patchset attimeof publishing this Note (MAR-2012). Apply Patch:8730312forany other environments.As one-off patches are not subjected to the same rigorous level of testing asdoneforOracle Server patch sets, you are encouraged toinstallandtestthis patchinatestenvironment prior to full production implementation.

Unknown software exception (0x400000) position 0 x0dd57306 is an error

There are three reasons for this phenomenon: hardware, memory, and system!

The following describes the hardware:

In general, the possibility of memory problems is not big, the main aspect is: memory is broken, memory quality is wrong, there are two different brands of different capacities of memory mixed insertion, it is also relatively prone to incompatibility, but also pay attention to the heat dissipation issues, especially after the Super frequency. You can use the MemTest software to check the memory, which can thoroughly detect the memory stability. This problem occurs when you use dual-memory plug-in and mixed plug-in with different brands of memory or buy a second-hand memory, check whether the memory is faulty or not compatible with other hardware.

If none of them exist, the fault will be eliminated from the software aspect.

Let's talk about the principle: the memory has a buffer where data is stored. When the program places the data in one of its locations, overflow occurs because there is not enough space. For example, a bucket can only store one kilo of water. When you put two kilos of water into the bucket, it will overflow. The system is displayed on the screen. This problem often occurs on Windows 2000 and Windows XP systems. Windows/XP has strict hardware requirements. Once a resource deadlock or overflow occurs or an operation similar to Windows 98, the above situation occurs when the system is stable.

Respondent: liujiaqi000000-assistant level 3

This problem occurs in a variety of ways: hardware, memory, and software.

I. Hardware:

Generally, computer hardware is very bad. The possibility of memory problems is not high (unless your memory is really a mess), the main aspect is: 1. Memory stick is broken (mostly used memory), 2. Memory with quality problems, 3. There is too much dust in the golden finger part of the memory inserted on the motherboard. 4. Use different brands of memory with different capacities, resulting in incompatibility. 5. Heat Dissipation caused by overclocking. You can use the MemTest software to check the memory, which can thoroughly detect the memory stability.

2. If none of them exist, the software should be able to resolve the fault.

Principle 1: the memory has a buffer where data is stored. When the program puts the data in the buffer zone, the "function" provided by the operating system is required to apply. If the memory is allocated successfully, the function will return the newly opened memory zone address to the application, and the application can use this memory address. This is "dynamic memory allocation", and the memory address is also the "cursor" in programming ". The memory is not always used, and sometimes the memory allocation fails. When the allocation fails, the system function returns a value of 0. The returned value "0" does not indicate a new enabled cursor. Instead, the system sends a notification to the application notifying you of an error. As an application, check whether the returned value is 0 after each memory application. If yes, it means that a fault has occurred and some measures should be taken to save the problem, this enhances the robustness of the program ". If the application does not check this error, it determines that this value is the available cursor assigned to it according to "thinking inertia" and continues to use this memory in subsequent execution. The real 0-address memory zone stores the most important "Interrupt Descriptor Table" in computer systems and is definitely not allowed by applications. In an operating system without a protection mechanism (such as DOS), writing data to this address will immediately become a machine, while in a robust operating system, such as Windows, this operation will be immediately captured by the system's protection mechanism. The result is that the operating system forces the application that fails to be closed to prevent the error from expanding. At this time, the above memory cannot be "read" error occurs, and the referenced memory address is "0x00000000". There are many causes of memory allocation failure, such as insufficient memory and mismatched system function versions. Therefore, this allocation failure is often seen after the operating system has been in use for a long time, installed a variety of applications (including inadvertently "installed" virus programs ), after a large number of system parameters and system files are changed.

In applications that use dynamic allocation, sometimes such a situation occurs: The program attempts to read and write a piece of "should... the remaining full text>

Stop: 0x0000000 (0XE14B60B0, 0X00000002,0X00000000, 0X805D8B56)

Check the code below:
(1) 0 × 0000001E (0 × c0000005 0 × FDE38AF9 0 × 00000001 0 × 7E8B0EB4) KMODE_EXCEPTION_HANDLED *** the first part of the error is the Stop Code) that is, 0 × 0000001E is used to identify the type that has occurred. the second part of the error is the four number sets enclosed in parentheses, indicating random parameters defined by developers. explanation of blue screen shutdown code: (1) 0 × 0000000A: IRQL_NOT_LESS_OR_EQUAL is mainly caused by faulty drivers, defective or incompatible hardware and software. it indicates that there is an Ethernet internal request level (IRQL) in kernel mode to access the memory address that is not authorized to access.
(2) 0 × 00000012: TRAP_CAUSE_UNKNOWN if this error message is returned, it is unfortunate that the cause of the error is unknown because the KeBugCheck analysis result is: (it is possible to install an innovative sound card)
(3) 0 × 0000001A: memory management errors of MEMORY_MANAGEMENT are often caused by hardware. For example, if the newly installed hardware is faulty
(4) 0 × 0000001EKMODE _ EXCEPTION_NOT_HANDLEDWindows kernel check contains an invalid or unknown process command. This shutdown code is generally caused by faulty memory or similar causes as (1 ).
(5) 0 × 00000023: FAT_FILE_SYSTEM0 × 00000024: NTFS_FILE_SYSTEM0 × 00000023 usually occurs when the system partition of the FAT16 or FAT32 file system is used for reading and writing, while 0 × 00000024 is caused by NTFS. SYS File error. two blue screen errors may be caused by physical damage to the disk, or the packet (IRP) is damaged due to interruptions. Other causes include: too many disk fragments on the hard disk and too frequent file read/write operations, in addition, the data volume is very large or caused by some disk image software or anti-virus software.
(6) 0 × 00000027: it is difficult to determine the cause of the RDR_FILE_SYSTEM error. However, a problem with Windows Memory Management may cause this shutdown code.
(7) 0 × 0000002E: DATD_BUS_ERROR system memory parity error, usually caused by defective memory (including physical memory, secondary cache or graphics card memory) the device driver accesses the memory address that does not exist. In addition, the hard disk is damaged by viruses or other problems.
(8) 0 × 00000035: NO_MORE_IRP_STACK_LOCATIONS the cause of this shutdown code is that the driver itself has a problem or the memory has a quality problem.
(9) 0 × 0000003F: NO_MORE_SYSTEM_PTES an error related to system memory management. For example, memory management problems may occur due to a large number of I/O operations, defective drivers use memory resources incorrectly; an application is allocated with a large amount of kernel memory.
(10) 0 × 00000044: MULTIPLE_IRP_COMPLETE_REQUESTS is usually caused by hardware drivers (this downtime code is not common among which is caused by the Falstaff. sys file in the newly installed driver)
(11) 0 × 00000050: PAGE_FAULT_IN_NONPAGED_AREA problematic memory (including physical memory, secondary cache, and video memory), incompatible software (mainly remote control and anti-virus software ), corrupted NTFS Volume and faulty hardware
(12) 0 × 00000051: REGISTRY_ERROR indicates that the Registry or System Configuration Manager has a crop. Because the hard disk itself has a physical bad track or a file system has a problem, this causes an I/O error when reading and writing the Registry file.
(13) 0 × 00000058: FTDISK_INTE ...... remaining full text>