October 18
September 29

Say it’s that day again. You try to connect to a (new) database and once again you are facing SQL*Net problems.

C:/oracle/product/10.1.0/client/BIN>sqlplus /nolog
 
SQL*Plus: Release 10.1.0.4.0 - Production ON Thu Sep 29 10:37:15 2005
Copyright (c) 1982, 2005, Oracle.  ALL rights reserved.
 
 
SQL> conn scott/tiger@lab.amis.nl
 
 
ERROR: ORA-12154: 
TNS:could NOT resolve the CONNECT identifier specified

Blast!. What can you do? Once in a while i get a lot of these SQL*Net problems (network changes, etc, the wrong weather type). So to help you (and me), here i will you give you my grey-matter checklist :-) (it’s not complete but should help you to resolve 80% of the problems)
Read MoreSmall introduction to SQL*Net debugging [client side]

August 23

Sometimes you want to search for Oracle database messages, their meaning or you are in search of specific database event settings.

For instance, a long time ago i was searching for an event that would trace when an datafile would expand / autoextend. I encountered latching problems on a Siebel system based on an new Oracle Failsafe environment (Windows 2000 cluster). I wanted to be sure that these latching problems weren’t introduced by the newly introduced datafile AUTOEXTEND feature.
Read MoreOERR – In search of Error Messages/Events

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