i have a problem that i have run a script in a database which is generated after taking diff from another same structured database and exit normally from sql prompt then is there anyway in oracle to rollback this whole script(means want to make database as it was before running script) or not?
View 2 Replies, which operator is more costly (Commit or Rollback) in terms of performance?
View 5 Replies View RelatedHaving PL/SQL procedure and calling sys dba procedure to alter rollback segment to online and after that to set the transaction to this rollback. The rollback altered to online but transaction still running on available rollback and not the one I was meant to. The user have executing grant on the sys dba procedure.
View 21 Replies View RelatedHow to rollback after commit.
View 5 Replies View Relatedwhen i enter a sql * plus session an do a rollback; (without performing anything), always a "rollback complete" message appears even if there is nothing to rollback.
View 4 Replies View RelatedI have found one interview question no.7 @ [URL] According to that it can be rollbackQuote:The truncate command is a DDL operation and just moves the high water mark and produces few rollback data.
But, I read That is not true in the case of oracle but it is true in the case of SQL Server.
I have an issue that whenever i restart my system, one of my rollback segment goes offline.
View 8 Replies View RelatedUser got ORA-01555 error , And My database is runnong with rollback segments ?
User got following error ? ORA-01555 'UNABLE TO EXTEND ROLLBACK SEGMENT RBS_O4'
After that I try like this :
prd176> ALTER ROLLBACK SEGMENT RBS_04 STORAGE (MAXEXTENTS 65530);
ALTER ROLLBACK SEGMENT RBS_04 STORAGE (MAXEXTENTS 65530)
ERROR at line 1:
ORA-02221: invalid MAXEXTENTS storage option value
What I have to do? means complete command ?
here I am pasting my db information;
prd176> SELECT SEGMENT_NAME,TABLESPACE_NAME,FILE_ID,MAX_EXTENTS,MIN_EXTENTS
FROM DBA_ROLLBACK_SEGS
2 3 ;
[code]...
On a huge transaction the buffer cache gets fulled and on that case oracle automatically writes to the data files. And as such when we issue commit statement it does not take more time. It only writes the dirty buffers to the dirty buffers to the datafiles.
When we rollback does the data gets erased from the datafile. What is the mechanism of rolling back ? It should be clearing the dirty buffers for sure.
While taking backup of schema using Expdp, I got the following error on one of the tables in the schema due to which export for this table could not be done.
Re: ORA-01555: snapshot too old: rollback segment number 2 with name "_SYSSMU2$" too small.
Undo retention time is 14400 sec and Undo Tablespace is Auto Extensible. Table to be exported contains 100 crore rows.
I need to do the following via the sql plus command prompt :
1. Execute a large ".pls" script file which does various inserts and updates to a table.
2. Spool the output of "select * from updatedtable;" to a text file to see the changes made.
3. Rollback all the updates and inserts in the script.
One of the users received the error
ora-01555: rollback segment too small
I have read about the error and saw that it is caused by transactions made upon same data, filling to maximum one of the UNDOTBS rollback segments.It happens only once in a while, each time on a different Rollback Segment.
I've read that i should do a few things to enlarge those segments, such as bring a 1. segment offline, 2. drop it and then 3. create it with a bigger size & possibly a bigger extent setting
i've also read that those actions aren't relevant if you have the parameter UNDO_MANAGEMENT set on AUTO, which is actually the case.is that why when i execute ALTER ROLLBACK SEGMENT RB_SEG_NAME_11$ OFFLINE;
1. How do i solve my issue with the Rollback segment being too small to contain the snapshot with the requested SCN?
2. what does the parameter UNDO_MANAGEMENT mean? should i change it, in order to adjust my Rollback Segments attributes, to prevent my error of re-occurring?
How to check/find the size of current ROLLBACK segment in oracle 10g ?
View 20 Replies View RelatedI have a active rollback segments. I am not able to drop the undo tablespace of this segment and archive logs are getting created.
View 2 Replies View RelatedI have a standard workflow process which was started but got completed without performing all the process.The process had to generate two(Comments & Approval) notifications but generated only one & as the user responded to the notification it got completed without invoking the approval process.Now I need the workflow to be rolled back to the initial step to restart the whole process again.
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