Bad Chunk

Hi, When I am trying to initialize the shared memmory using oninit -s. I get the following message in the online.log: shmget: [EEXIST][17]: key 526a4801: shared memory already exists 00:11:21 mt_shm_init: can't create resident segment 00:11:38 shmget: [EEXIST][17]: key 526a4801: shared memory alreadyexists 00:11:38 mt_shm_init: can't create resident segment Also warnings for bad primary chunk for 2 dbspaces comes in my standard output. Inspite of these I can bring the databse to online mode, but could not do any query operation to any of the databases residing on the corrupted chunks.I don t remember doing anything, extraordinary to corrupt the chunks. I would appreciate if some one can give me a reason for this occurence. Thanks Manoj