Solved

ALTER TABLESPACE READ WRITE and ORA-01256

Posted on 2003-12-12
7
1,220 Views
Last Modified: 2007-12-19
Hello,

 Somteimes after this command : ALTER TABLESPACE READ WRITE
 I receive : ORA-01256 error in locking database file xxxxx

 The messages manual says :
   Cause: The file is in use by another database instance.
   Action: Determine which database instance legitimately owns the file.

 But there's only ONE instance on my server.
 How can I see who is locking the .dbf ?

 Thanks


0
Comment
Question by:Xav2
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 10

Expert Comment

by:SDutta
ID: 9929303
Do you have any other transportable tablespaces ? Does the tablespace have any partitioned table that is partitioned over to another transportable tablespace ? If you do, then you may face this error after exporting the other transportable tablespace.
0
 

Author Comment

by:Xav2
ID: 9929407

 The tablespace is not a transportable TS .
 I put it RO to prevent backup of static data and now Iwant to drop it.
 
 The tablespace contains one partition of a partitioned table.

 
0
 
LVL 10

Expert Comment

by:SDutta
ID: 9929638
Say you have tablespaces T1, T2 which contain the partitioned table Table1.
Tablespace T1 is read-only and T2 is read-write.

Create another table with the same columns as the partitioned table in tablespace T2.
SQL> create table mytable tablespace T2
as select * from table1 where 1 = 2;

Exchange the partition with the newly created table.
SQL> alter table table1 exchange partition p1 with table mytable;

Mytable now has partions in T1 and T2.
Drop the newly created table mytable.

Now your tablespace T1 does not have any overlapping partitioned tables.
You should now be able to make it read-write or even drop it.

0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 23

Expert Comment

by:seazodiac
ID: 9935556
Try to shutdown the database in normal mode.

then log in as sys, start the database in the restricted mode:

SQL> start restricted
0
 

Author Comment

by:Xav2
ID: 10450287

 Here's the solution :

 Increase the Sun-Solaris parameter rlim_fd_max (max number of open files per process) then reboot.
0
 
LVL 1

Accepted Solution

by:
Computer101 earned 0 total points
ID: 12176163
PAQed, with points refunded (125)

Computer101
E-E Admin
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Why doesn't the Oracle optimizer use my index? Querying too much data Most Oracle developers know that an index is useful when you can use it to restrict your result set to a small number of the total rows in a table. So, the obvious side…
I remember the day when someone asked me to create a user for an application developement. The user should be able to create views and materialized views and, so, I used the following syntax: (CODE) This way, I guessed, I would ensure that use…
This video shows how to copy a database user from one database to another user DBMS_METADATA.  It also shows how to copy a user's permissions and discusses password hash differences between Oracle 10g and 11g.
This video explains what a user managed backup is and shows how to take one, providing a couple of simple example scripts.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question