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•TNS:could not resolve the connect identifier specified
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•table or view does not exist
•end-of-file on communication channel
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•resource busy and acquire with NOWAIT specified
•error occurred at recursive SQL level string
•ORACLE initialization or shutdown in progress
•archiver error. Connect internal only, until freed
•snapshot too old
•unable to extend temp segment by string in tablespace
•Credential retrieval failed
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•unable to create INITIAL extent for segment
•out of process memory when trying to allocate string bytes
•shared memory realm does not exist
•cannot insert NULL
•TNS:unable to connect to destination
•remote database not found'>ora-02019
•exception encountered: core dump
•inconsistent datatypes
•no data found
•TNS:operation timed out
•PL/SQL: could not find program
•existing state of packages has been discarded
•maximum number of processes exceeded
•error signaled in parallel query server
•ORACLE instance terminated. Disconnection forced
•TNS:packet writer failure
•see ORA-12699
•missing right parenthesis
•name is already used by an existing object
•cannot identify/lock data file
•invalid file operation
•quoted string not properly terminated
Data Guard learning resources?

Data Guard learning resources?

2006-05-17       - By Bob

Reply:     1     2     3     4     5     6  

I also found dg easy to setup. My problems come from configuring dgmgrl.
Getting the network configuration syntactically correct is difficult.
Which is why the documentation on the subject is sparse or non existent

You have:

DB_NAME
DB_UNIQUE_NAME
INSTANCE_NAME
SERVICE_NAMES
GLOBAL_DBNAME
SID
SID_NAME

Getting the init.ora, listener.ora and tnsnames to line up is tricky at best

If anyone has working example of the 3 files lined up so dgmgrl performs
a clean switchover I'd like to see it.

When it works, it?s fantastic. Getting a clear doc of how thats done
-for me - has been the problem

links Ive used

dgmgrl cli
http://www.oracle.com/technology/deploy/availability/pdf/TWP_DataGuard_10gR2.pdf

dg
http://webkemper1.informatik.tu-muenchen.de:8080/interna/oracle10g/doc/server
.101/b10822/cli.htm


When dgmgrl works it looks like this
###############################################
DGMGRL> switchover to 'ORCL_p4p';
Performing switchover NOW, please wait...
Operation requires shutdown of instance "orcl" on database "STBY_dell"
Shutting down instance "orcl"...
ORA-01109 (See ORA-01109.ora-code.com): database not open

Database dismounted.
ORACLE instance shut down.
Operation requires shutdown of instance "orcl" on database "ORCL_p4p"
Shutting down instance "orcl"...
ORA-01109 (See ORA-01109.ora-code.com): database not open

Database dismounted.
ORACLE instance shut down.
Operation requires startup of instance "orcl" on database "STBY_dell"
Starting instance "orcl"...
Switchover succeeded, new primary is "ORCL_p4p"
DGMGRL> exit


--
"Oracle error messages being what they are, do not
highlight the correct cause of fault, but will identify
some other error located close to where the real fault lies."

--
http://www.freelists.org/webpage/oracle-l