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SubjectRe: LARGE Oracle Installation (Buffer Problems)
Date
Hi,

Here is the error message i get:

with
Database Buffers = db_block_buffers * db_block_size
Database Buffers = 16000 * 8192 = 125 MB

SVRMGR> startup
ORA-27123: unable to attach to shared memory segment
Linux Error: 22: Invalid argument
^^^^^^^^^^^

And it works with:

Database Buffers = db_block_buffers * db_block_size
Database Buffers = 8000 * 8192 = 62.5 MB

SVRMGR> startup
ORACLE instance started.
Total System Global Area 171752720 bytes
Fixed Size 48400 bytes
Variable Size 105832448 bytes
Database Buffers 65536000 bytes
Redo Buffers 335872 bytes
Database mounted.
Database opened.
SVRMGR>


I have enough shared memory (512MB) and free shows this:

[root@kredel7 background]# free -m
total used free shared buffers
cached
Mem: 1012 453 558 46 354
35
-/+ buffers/cache: 63 948
Swap: 2129 0 2129


I put the strace output file at http://linux.uni-mannheim.de/strace.out

Hope that would help finding the problem.

Anas

Chris Wedgwood wrote:

> Can you post a strace of oracle starting up?
>
> I'm guessing (for no other reason than this affect sybase) that it
> cannot allocate enough sysV shared-memory.
>

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