Error Messages (U)

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Unable to attach to shared memory segment

Do you encounter either of these errors --

  • unable to attach to shared memory segment
  • unable to determine size of shared memory segment

Check permissions on your $ORACLE_HOME/bin/oracle file. You may need to set the sticky bit.

First, run an ls -l $ORACLE_HOME/bin/oracle. It should look like this --

openlink> ls -l /$ORACLE_HOME/bin/oracle
-rwsr-s--x 1 oracle dba 33692568 Aug 18 2009 oracle


If it does not, use the chmod command to alter the permissions like this --

chmod 6751 oracle

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