how to use more than 3G in Linux x86

Solution: install a x64 linux or  add PAE ( see below )

$ sudo apt-get update
$ sudo apt-get install linux-headers-server linux-image-server linux-server

http://www.cyberciti.biz/faq/ubuntu-linux-4gb-ram-limitation-solution/

rman recovery scenarios

the source :
http://momendba.blogspot.com/2010/09/rman-backup-recovery-most-essential-but.html 

 

ORA-30012

ORA-30012 Database Does Not Start With UNDO_MANAGEMENT=AUTO [ID 258506.1]

Foame

Paradoxul  dietei: Cand vrei sa slabesti trebuie sa fii satul tot timpul iar cand vrei sa iei in greutate trebuie sa-ti fie foame tot timpul.

PASSWORD_LIFE_TIME in Oracle 11G

In the default profile in Oracle Database 11g, the parameter PASSWORD_LIFE_TIME is set to 180

oracle 11Gr2 on vmware ORA-24324 ORA-24323

 In order to start an oracle database 11gr2 on a virtual linux x86 machine, you have to apply patch 8670579(from metalink)

SQL*Plus: Release 11.2.0.1.0 Production on Fri Oct 29 21:33:17 2010

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Enter user-name: / as sysdba
Connected to an idle instance.

SQL> startup;
ORA-24324: service handle not initialized
ORA-24323: value not allowed
ORA-03113: end-of-file on communication channel
SQL> quit



  PATCH  8670579    DBBETA :NETCA/DBCA FAILED WITH HOTSPOT VIRTUAL MACHINE    11.2.0.1.0         Linux x86 (American English)    General    Oracle Database Family    26 Feb 2010    1.1 MB   

OCM Adrian Neagu

http://education.oracle.com/education/otn/oct19_10/aneagu.html

when to rebuild indexes - SYS_OP_LBID

Script to investigate a b-tree index structure [ID 989186.1]

a free diagnostic tool

http://tech.e2sn.com/oracle-scripts-and-tools/session-snapper

alege ce iubesti si apoi iubeste ce-ai ales