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…
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…
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
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,…
Remove all files that are generated in OCT ls -rlt | grep -i “oct” | awk ‘{print $9}’ | xargs rm Remove files that has number 3200 to 3699. ls -rlt arch1_573748961_3[2-6][0-9][0-9]* | awk ‘{print $9}’ | xargs rm
In this article I will describe the steps used to identify which shared memory and semaphore segments are owned by a particular instance in Oracle V7, V8.0, V8i, and V9i. This can be helpful in recovery situations where the database instance has not released its shared memory and semaphores on database shutdown. Consider the situation…
tuningdb21->AWRTEST@(/db1/home/oracle)ls -rlt | sort +4 total 48 drwx—— 2 oracle dba 96 May 17 16:16 nsmail drwxrwxr-x 3 oracle dba 96 Oct 3 2005 app drwxr-xr-x 3 oracle dba 96 Oct 4 2005 patch drwxr-xr-x 2 oracle dba 96 Oct 16 15:17 scripts -rw-r–r– 1 oracle dba 124 Oct 3 2005 local.cshrc -rw-r–r– 1 oracle…
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Locktree.sql is renamed with $ORACLE_HOME/rdbms/admin/utllockt.sql This will show the lock hierarchy in Oracle.
Test data
Some OS level threshold for performance. Run queue > 8 : May indicate an overloaded CPU. Page_in and Page_out > 50 : May indicate overloaded RAM memory. This should be correlated with page-outs and scan rate. user+system CPU > 70% : Indicates periods with a fully-loaded CPU subssystem.Periods of 100% utilization are only a concern…
