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How can one dump internal database structures?

April 26, 2017database dump Internal structures

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How can one dump internal database structures?

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The following (mostly undocumented) commands can be used to obtain information about internal database structures. o Dump control file contents alter session set events ‘immediate trace name CONTROLF level 10’ / o Dump file headers alter session set events ‘immediate trace name FILE_HDRS level 10’ / o Dump redo log headers alter session set events ‘immediate trace name REDOHDR level 10’ / o Dump the system state NOTE: Take 3 successive SYSTEMSTATE dumps, with 10-minute intervals alter session set events ‘immediate trace name SYSTEMSTATE level 10’ / o Dump the process state alter session set events ‘immediate trace name PROCESSSTATE level 10’ / o Dump Library Cache details alter session set events ‘immediate trace name library cache level 10’ / o Dump optimizer statistics whenever a SQL statement is parsed (hint: change statement or flush pool) alter session set events ‘10053 trace name context forever, level 1’ / o Dump a database block (File/ Block must be converted to DBA address) Co