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Re: ORA-27123: unable to attached to shared memory segment

From: santosh sharma <no-one_at_yahoo.com>
Date: Tue, 16 Jul 2002 10:32:44 -0700
Message-ID: <ah1lbl$q0jsu$1@ID-84096.news.dfncis.de>


I was having similar problem on my 7.3 redhat . Then I tried to to create database with minimum options like java, spatial,context etc. and it worked like charm. You can add these options later on by running sql scripts. hth
santosh sharma

"OtisUsenet" <otis_usenet_at_yahoo.com> wrote in message news:5606b639.0207151335.3bdcdecb_at_posting.google.com...
> Hello,
>
> I installed Oracle 9.2.0.1.0 on Linux (RedHat 7.3), and run into a
> problem while trying to create my first database via 'dmca'.
>
> This Linux machine has 1 GB RAM.
> Shared memory from /proc/sys/kernel/shm*:
> $ cat /proc/sys/kernel/shm*
> 2097152
> 33554432 <-- shmmax
> 4096
>
> Here are some DB parameters:
>
> db_block_size 8192
> db_cache_size 32MB
> db_file_multiblock_read_count 16
> java_pool_size 20971520
> job_queue_processes 10
> large_pool_size 16777216
> open_cursors 300
> pga_aggregate_target 25165824
> processes 150
> shared_pool_size 83886080
> sort_area_size 524288
>
>
> Here are some more current kernel numbers:
>
> $ ipcs -l
>
> ------ Shared Memory Limits --------
> max number of segments = 4096
> max seg size (kbytes) = 32768
> max total shared memory (kbytes) = 8388608
> min seg size (bytes) = 1
>
> ------ Semaphore Limits --------
> max number of arrays = 128
> max semaphores per array = 250
> max semaphores system wide = 32000
> max ops per semop call = 32
> semaphore max value = 32767
>
>
> I have tried setting the 'Typical' database via Database Configuration
> Assistant, but that resulted in the same error.
>
> I have tried setting use_indirect_data_buffer to TRUE, but that gave
> me a different error (ORA-00385: cannot enable Very Large Memory with
> new buffer cache parameters).
>
> Has anyone got any ideas why this is failing?
> I didn't choose any large memory allocations anywhere (I left
> everything at its default value). Do I still need to increase the
> number in /proc/sys/kernel/shmmax?
>
> Thanks,
> Otis
Received on Tue Jul 16 2002 - 12:32:44 CDT

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