Oracle startup error ORA-00845: MEMORY_TARGET not supported on this system solution, memorytarget

Oracle startup error ORA-00845: MEMORY_TARGET not supported on this system solution, memorytarget

Oracle start error ORA-00845: MEMORY_TARGET not supported on this system

Possible cause: the ORACLE MEMORY_TARGET parameter exceeds the memory of the oracle server, or exceeds the idle memory of the current server (that is, the configured memory cannot be obtained when oracle is started)

 

Eg:

Oracle version: 11gR2

OS version: RedHat 6.4 Enterprise Edition

Server: Virtual Machine

 

Analysis steps:

1. Check that the value of the current MEMORY_TARGET parameter is *. memory_target = 408944640, which is roughly 390 M. (You can view it through spfile)

2. view the memory of the current system, which is about 200 MB.

Grep-I memtotal/proc/meminfo
MemTotal: 236376 kB

 

 

Confirm the problem:

Set the SGA parameter for oracle MEMORY_TARGET to be greater than the idle memory of the operating system.

 

Solution:

Modify the value of MEMORY_TARGET to a proper range (if you need to set MEMORY_TARGET memory for oracle to switch to the official environment, you need to increase the server memory, which will not be discussed at the beginning)

 

1. Back up existing spfile files

Cp spfilestudy. ora spfilestudy. ora. bak

2. Use spfile to create pfile (spfile is binary and cannot be directly modified). Modify pfile and generate a new spfile.

SQL> create pfile from spfile;

File created.

 

Modify pfile parameter *. memory_target = 104857600

 

SQL> create spfile from pfile;

File created.

 

After confirmation, start oracle