We are running Crucible 2.6.0 with Oracle as the database 18.104.22.168. We need to upgrade Oracle DB from 22.214.171.124 to 126.96.36.199 to apply some security patches.
Please update us whether Atlassian Crucible supports Oracle 188.8.131.52 DB.
I can confirm that Crucible v2.6 supports Oracle 11 databases and I wasn't able to find any bug reports related to that version, so you shouldn't have any problems with your upgrade: https://confluence.atlassian.com/display/CRUCIBLE026/Supported+Platforms
All the best,