Where can one get a list of all hidden Oracle parameters? (for DBA
ORACLE Interview Questions and Answers (Part 2)
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316. Where can one get a list of all hidden Oracle parameters? (for DBA
Oracle initialization or INIT.ORA parameters with an underscore in front are hidden or unsupported parameters. One can get a list of all hidden parameters by executing this query:
where substr(KSPPINM,1,1) = '_';
The following query displays parameter names with their current value:
select a.ksppinm "Parameter", b.ksppstvl "Session Value", c.ksppstvl "Instance Value"
from x$ksppi a, x$ksppcv b, x$ksppsv c
where a.indx = b.indx and a.indx = c.indx
order by a.ksppinm;
Remember: Thou shall not play with undocumented parameters!
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