plan10g.sql
set lines 150 pages 2000 accept v_sqlid prompt ‘Enter SQL_ID : ‘ select * from table(dbms_xplan.display_cursor(‘&v_sqlid’, 0));
Year: 2007
cache buffer chain latch
Good Docs. (1) http://www.oracle-training.cc/oracle_tips_hidden_parameters.htm (2) FOR EAAPPPROD22 (UOCQA) ====================== Also I did some research on ‘cache buffer chains’ CBC events and found that wait on UOCQA instance ( on eaappprod22 ) was occurring due to wait on specific chain, not because of wait on specific Block or ROW. As per current configuration, # of linked-list…
Finding Oracle Patches with opatch
dbaltxprod50->WEBP18F@(/home/oracle)/oracle/app/oracle/product/10.2/OPatch/opatch lsinventory Invoking OPatch 10.2.0.2.0 Oracle interim Patch Installer version 10.2.0.2.0 Copyright (c) 2005, Oracle Corporation. All rights reserved.. Oracle Home : /oracle/app/oracle/product/10.2 Central Inventory : /var/opt/oracle/oraInventory from : /oracle/app/oracle/product/10.2/oraInst.loc OPatch version : 10.2.0.2.0 OUI version : 10.2.0.2.0 OUI location : /oracle/app/oracle/product/10.2/oui Log file location : /oracle/app/oracle/product/10.2/cfgtoollogs/opatch/opatch-2006_Aug_28_17-52-47-E DT_Mon.log Lsinventory Output file location : /oracle/app/oracle/product/10.2/cfgtoollogs/opatch/lsinv/lsinventory-2006_Aug_28 _17-52-47-EDT_Mon.txt…
Sort with ASCII order and Numeric Order
By default sort command will sort by ASCII order. To sort it on basis of NUMERIC sort, you need to specify “-n” switch. du -sk * | sort -n
Order by with ROWNUM
18:02:01 PVM@AWRTEST:-> select * from pvm1; NO ——— 100 20 40 1 2 200 24 7 rows selected. Elapsed: 00:00:00.01 18:02:17 PVM@AWRTEST:-> select no from ( select no, row_number() over (order by no desc) r from pvm1) where r=2; NO ——— 100 1 row selected. Elapsed: 00:00:00.02 18:02:38 PVM@AWRTEST:-> select no from ( select no,…