While starting DB instance below error coming because of less memory allocated to oracle user at OS level.
ORA-27102: out of memory
SVR4 Error: 12: Not enough space
Additional information: 1671
Additional information: 16106127360
Additional information: 6291456000
If Oracle DB version is 126.96.36.199 or later use below workaround to resolve the eorror.
1. Upgrade the OS to at least Oracle Solaris 188.8.131.52.0 release (or greater).
2 A workaround that has proven successful is to set the following parameter in the init/spfile and restart the database