ASM 11.2.0.2 Is Not Releasing File Descriptors After Drop or Dismount Diskgroup. [ID 1306574.1]

Introduction.

One of my Linux environments is set up with 11.2.0.2.0. both Grid Infra structure and Rdbms together with ASM  using  luns that are part of EMC  BCVS copy  of production for reporting purposes.   This environment can be classified as a  Oracle – Restart environment. As part of a process that is supposed to run by  automated  Job during the night the Database should  go through various stages ( shutdown  abort,  dismount the dedicated ASM diskgroups  per database in ASM).  After that the BCVS are handed over to the source side again for syncing  after which the database will be rebuild using the fresh  BCV split.

Well as I said , supposed  to run automated…  cause at this point and time , during the day this is working  properly but during the night we get  per disk in the disk group a message similar to:

asm-diskgroupname-data-001: map in use

From Reading  and searching  metalink  it was suggested to implement the latest PSU Patch January 2013  due to:

ASM 11.2.0.2 Is Not Releasing File Descriptors After Drop or Dismount Diskgroup. [ID 1306574.1]

So i started my Journey on  patching  this environment.

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