I’m refreshing our Hands-On Lab for Oracle Database 18c. And as part of a performance evaluation I wanted to set an underscore parameter to ignore all hints my load test tool sets. But then I learned: This does not work anymore as
_optimizer_ignore_hints is now
optimizer_ignore_hints. We made the underscore obsolete in Oracle Database 18c.
_optimizer_ignore_hints is now optimizer_ignore_hints
Actually in Oracle Database 188.8.131.52 you can find a long list of obsolete parameters here:
To be precise: We obsoleted159 parameters. In addition, in Oracle Database 18c we added an additional …Continue reading...