AsyncIO patch installation

• Copy the patch: scp lxfs6142:p4199559_92070_LINUX.zip .

#Patch Installation Instructions:
#  --------------------------------
#  To apply the patch, unzip the PSE container file:
#
#  p4199559_9207_LINUX.zip
#
#  Set your current directory to the directory where the patch
#  is located:
#
#    % cd 4199559
#
#  Before installing the patch you will need to edit the libc.so that has been
#  created by unzipping the PSE container file (above). This will be in the 
#  files/lib/stubs/ directory. The libc.so is a regular text file and can be 
#  edited with your normal editor, i.e. 'vi', 'ed' etc.
# 
#  For example:
#
#    % vi files/lib/stubs/libc.so
#
#  Change %ORACLE_HOME% for the actual value of $ORACLE_HOME on your system. Do
#  not use environment values in this.
#
#  For example:
#
#    GROUP ( %ORACLE_HOME%/lib/stubs/libc.so.6 /usr/lib/libc_nonshared.a )
#
#  becomes
#
#    GROUP ( /u01/oracle9i/lib/stubs/libc.so.6 /usr/lib/libc_nonshared.a )
#
#  in the case where $ORACLE_HOME is /u01/oracle9i.
#
#  Failure to do this will result in errors when applying the patch.
#
#  Having edited the libc.so, ensure that the directory containing the opatch 
#  script appears in your $PATH; then enter the following command:
#
#    % opatch apply
#
#  Patch Special Instructions: (Important)
#  ---------------------------------------
#  Make sure all instances running under the ORACLE_HOME being patched
#  are cleanly shutdown before installing this patch. Also ensure that
#  the tool used to terminate the instance(s) has exited cleanly.

• Switching on AsyncIO

   cd $ORACLE_HOME/rdbms/lib
   make -f ins_rdbms.mk async_on
   make -f ins_rdbms.mk ioracle

Parameter settings in init.ora file for filesystem files:

   alter system set disk_asynch_io=true scope=spfile;
   alter system set filesystemio_options='asynch' scope=spfile;

Restart the instance.