Oracle DBA Place

ORA-600/ORA-7445 are generic internal error numbers for Oracle program exceptions. Sometimes these errors are unique for your specific problem and cannot be found via search engines. Using "ORA-600 lookup tool" may point your specific problem, faster and accurate. The tool can be found in ORA-600 lookup tool - Metalink Document ID 153788.1 The flowing video will guide you the usage of the LookUp Tool (11:12) - Metalink Document ID 1082674.1

Looking for installed patches on the database I have always used opatch lsinventory (since 9.2 and up) From CPUJan2006 onwards you can just query select * from registry$history; See Metalink Note:352783.1 for more information.

installing or upgrading on Ubuntu is not supported but can be done thanks to other bloggers it is well documented here https://lostinmac.com/2012/01/29/installtion-doracle-11gr2-sur-ubunutu-11-10/ thanks

before oracle 11.2 we should have do this steps: cd $ORACLE_HOME/rdbms/lib make -f ins_rdbms.mk dv_off cd $ORACLE_HOME/bin relink all from now this is simpler and shorter cd %ORACLE_HOME%/bin chopt disable dv All options are written in the usage syntax: usage: chopt [enable|disable] {option} options: dm = Oracle Data Mining RDBMS Files dv = Oracle Database Vault option lbac = Oracle Label Security olap = Oracle OLAP partitioning = Oracle Partitioning rat = Oracle Real Application Testing

ADRCI & alert file In Oracle version 11, no need to look for the location of alert log file, just use: adrci exec="set home orcl ;show alert -tail -f" detailed practical usage can be found here