O1034 Oracle not available error

Question

Right, I'm running on a Windows Xp platform, I've installed ok and it runs ok. I have manually altered the password of user HR from within sqlplus, and everything is fine.The problem comes when I switch off and switch back on, I am unable to start the database.
Running sqlplus system/password gives me ORA-01034 Oracle not available and ORA-27101: Shared memory realm does not exist.
I have tried running stobdb.bat and startdb.bat which both run ok, but I still get the oracle not available error when going into sqlplus. It seems that the PC does not install the oracle set up on booting perhaps? I also cannot access the "Go to database home page", from my web browser, but I'm not sure if it is necessary to access that home page?

Answer 1

We are seeing this a little bit, and not sure what is causing it at this stage. Starting the database manually seems to help, or at least points to the root cause problems.
The steps to start the database manually are posted at Re: ORA-01033 after starting and trying to connect. and also posted below
To shutdown manually go to the SQL Command Line (as the OS user that installed Oracle).
At the SQL Prompt SQL> issue
connect / as sysdba
For example
SQL> connect / as sysdba
Connected.
Then type
shutdown immediate;
You should see the following
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
Then type
startup
You should see the following
SQL> startup
ORACLE instance started.
Total System Global Area 599785472 bytes
Fixed Size 1249348 bytes
Variable Size 192942012 bytes
Database Buffers 402653184 bytes
Redo Buffers 2940928 bytes
Database mounted.
Database opened.
Just to be sure, also try a select
select count(*) from hr.employees;
You should see
SQL> select count(*) from hr.employees;
COUNT(*)
107
Any problems or errors reported with any of these steps, please let us know.