MiDBA
Build an Oracle DBA on a firm foundation of sound practices and technical knowledge!
Sunday, May 25, 2008
白狐
曾经沧海难为水,除却巫山不是云。
取次花丛懒回顾,半缘修道半缘君。
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solutions for handling RMAN-08138
configured "CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 2 TIMES TO DISK; " when RMAN> delete noprompt archivelog u...
RMAN-20020: database incarnation not set
I have one PT env using storage sync for database sync. Thought need to re-register DB after DB refresh, so unregister and register again....
wrong agent token when start cloud control agent
[symptoms] orarac2poc:ORCL2:/home/oracle> . ./oms_agent_env orarac2poc:ORCL2:/home/oracle> $AGENT_HOME/bin/emctl start agent Oracl...
CATALOG RECOVERY AREA
after rounds of recovery testing, I believer there are tons of obsolete files in FRA. There are some stubborn datafile copy can't be de...
rman backup set and backup piece concepts
backup piece The physical file format used to store RMAN backup sets backup set A backup of one or more datafiles, control files, SPFILEs...
11gR2 :Create Physical standby from Active database using RMAN
Lots of such article in internet, also can refer to " F.3 Using the DUPLICATE Command to Create a Standby Database" in Oracle...
RMAN-03009 when CONTROLFILE AUTOBACKUP ON
RMAN> show all; RMAN configuration parameters for database with db_unique_name ORCL are: CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # de...
Re-Configure data guard broker after re-create physical standby database
SYS@DGS> startup mount ORACLE instance started. Total System Global Area 680607744 bytes Fixed Size 2229600 bytes Varia...
bash commands for QNAP
This is useful. find /share/Multimedia/ –name *.m4a | while read foo; do rm “$foo” ;done https://www.ripcaster.co.uk/node/772
What is the retention of ASH
Oracle collects Active Session History (ASH) statistics (mostly wait statistics for different events) for all active sessions every second f...
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Merge Join caused Cartesian Product
structure of redo.log is exactly the same as its a...
DBMS package for tracing
白狐
the after images
redo log size
Determining the Bad Source of statistics
About Histogram
Abandom Notepad++
block's life of Full Table Scan
remove external procedures
Database checkpoint
rows returned order
object's precedence
Ojbect Namespace
reconfig DB Console HTTP port number
example of index suppressed
ORA-16014: log 2 sequence# 12 not archived, no ava...
Useful v$acive_session_history
Create DB Control
对ORACLE DBA 这份职业的看法
Effect of creating missing index
large pool for shared server + sga_target
Check current sql execution plan and historical plan
Import statistics failed due to object out of synch
sga_target and its compoents
RHEL/CentOS5 suspend
centos 5 can't suspend
VMware-player-2.0.2-59824.exe caused system keepin...
How to check datatype length
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Structured Data
Oracle Database Real-World Performance & Scalability Blog
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