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re-executing query forces db crash [message #53960] Tue, 22 October 2002 00:25 Go to next message
Krishna Raju
Messages: 1
Registered: October 2002
Junior Member
Hi ,

I was executing this query to find out the entity relationships in my
database (key columns mapping) .The Server is : Oracle8i 8.1.7 on linux.

SQL>
select master.table_name "MASTER TABLE",master.constraint_name "PRIMARY KEY",
child.table_name "CHILD_TABLE" , child.constraint_name "FOREIGN KEY" ,
mast_col.column_name "PK COLUMN",child_col.column_name "FK COLUMN"
from
dba_constraints master ,
dba_constraints child ,
dba_cons_columns mast_col ,
dba_cons_columns child_col
where
master.constraint_name = child.r_constraint_name and
master.constraint_name = mast_col.constraint_name and
child.constraint_name = child_col.constraint_name and
master.owner = 'SAGI' ;

I re-executed this query and got these errors.

1. ORA-12571 : Packet writer failure . (i looked up the oracle error
manual and found out this is due to DBWR process. the explanation was brief,

and then after certain more tries to fetch data , i got the unix error

2. ORA-27101 - Shared memory realm does not exist.

after these errors , the database went down. i tried to shutdown the instance
and the database, svrmgrl said that database is not open , but the instance
was stopped and when i started up the db , i got an error again saying

3. ORA-01033 - Oracle initialization or shutdown in progress' .

and i could not startup the database.

Please try to resolve this problem ASAP as the database availability is 24/7
and downtime is very costly to us.

in anticipation, truly,

Krishna
Oracle DBA , Packetware INDIA Pvt. Ltd.
email : prasad@packetware.com , sagikrishna@yahoo.com
Re: re-executing query forces db crash [message #53962 is a reply to message #53960] Tue, 22 October 2002 07:54 Go to previous message
B
Messages: 327
Registered: August 1999
Senior Member
Is not Ur query... Ur database is probably damage. try to run db_verify on Ur datafile.
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