On Oracle
Wednesday, April 29, 2015
IBM AIX POWER7 CPU Usage and Throughput
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This Blog summaries author's observation and understanding on CPU usage of AIX POWER7 SMT4 Architecture. POWER8 content is added in Sec...
Tuesday, April 21, 2015
Oracle 11.2.0.4.0 AWR "Tablespace IO Stats" Column Names Shifted
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Oracle 11.2.0.4.0 added two new columns in Section "Tablespace IO Stats" and "File IO Stats": 1-bk Rds/s Av 1-bk Rd(...
Wednesday, January 7, 2015
open_cursors, session_cached_cursors: cursordump
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1. Parse Oracle (11.2.0.3.0) document wrote: OPEN_CURSORS specifies the maximum number of open cursors (handles to private SQL areas) a...
Monday, December 22, 2014
Local prefixed vs. nonprefixed indexes: Column Null Values
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According to Oracle Doc, Oracle does not index table rows in which all key columns are null except in the case of bitmap indexes ( Database ...
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