Jtdylktuy

I am trying to install Oracle Database 11g Release 2 on RHEL 7.2. Executing runfixup.sh, it outputs:

# /tmp/CVU_11.2.0.1.0_oracle/runfixup.sh

Response file being used is :/tmp/CVU_11.2.0.1.0_oracle/fixup.response

Enable file being used is :/tmp/CVU_11.2.0.1.0_oracle/fixup.enable

Log file location: /tmp/CVU_11.2.0.1.0_oracle/orarun.log

Setting Kernel Parameters...

/tmp/CVU_11.2.0.1.0_oracle/orarun.sh: line 244: [: 18446744073692774399: integer expression expected

The value for shmmax in response file is not greater than value of shmmax for current session. Hence not changing it.

/tmp/CVU_11.2.0.1.0_oracle/orarun.sh: line 335: [: 18446744073692774399: integer expression expected

The value for shmall in response file is not greater than value of shmall for current session. Hence not changing it.

The value for semmni in response file is not greater than value of semmni for current session. Hence not changing it.

Take shmmax as an example, the code in runfixup.sh is like this:

 239           #current value of shmmax - value in /proc/sys/kernel/shmmax

 240           cur_shmmax=`/sbin/sysctl -n kernel.shmmax`

 241           #remove the extra spaces in the line.

 242           cur_shmmax=`echo $cur_shmmax | sed 's/ //g'`

 243           echo "shmmax for current session:$cur_shmmax" >> $log_file/orarun.log

 244           if [ $SHMMAX -gt $cur_shmmax ]

 245           then

 246               if  ! $SYSCTL_LOC -w kernel.shmmax="$SHMMAX"

 247               then

 248                 echo "$SYSCTL_LOC failed to set shmmax" |tee -a $log_file/orarun.log

 249               fi

 250            else

 251                  echo "The value for shmmax in response file is not greater than value of shmmax for current session. Hence not changi     ng it." |tee -a $log_file/orarun.log

 252            fi

Check shmmax configuration in system:

# /sbin/sysctl -a | grep shm

kernel.shm_next_id = -1

kernel.shm_rmid_forced = 0

kernel.shmall = 18446744073692774399

kernel.shmmax = 18446744073692774399

kernel.shmmni = 4096

vm.hugetlb_shm_group = 0

And the shmmax configuration value is like this:

My questions are:

(1) The if [ -gt ] in Bash only operates on integers? How to operate on 64-bit long integer?

(2) Is it OK to modify shmmax as the expected value of Oracle hint?

Bash appears to operate ok on signed 64 bit integers. If you need even more robustness, use bc, e.g. on these unsigned 64 bit integers that bash can't handle.

echo "18446744073709551615 * 2" | bc -l

36893488147419103230

echo "18446744073709551615 > 2" | bc -l

1

echo "18446744073709551615 < 2" | bc -l

0

Offhand I would modify shmmax as Oracle indicates. There are any number of web pages explaining exactly what this will do, in case you have some hesitation about tinkering with the shared memory distribution.

Same problem to me installing an Oracle XE on RHEL7, the values of shmmax and shmall was the same you show. But the machine has only 3G of RAM, this huge values are not needed. So, I changed the parameters to values less than this in sysctl.conf, and the installation gone ahead without problems.

Best regards,
Régis