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[DBA Daily Notes] ORA-00054 Resource busy when dropping table
Here are a few things you can do Kill session from GUI Go to toad and log on as system administrator. You could also do this sql developer. Now you would have an overview of the sessions that might...
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Oracle OPatch Failure & OPatch Rollback
OPatch Failure I was encountering an OPatch failure during my Oracle Application Server 10g upgrade. The reason is that our previous developers failed during the last patch installation. The failure...
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Dropping Tables(Options and Recovery)
This blog is mainly for analyzing dropping table commands for Oracle SQL. You might have seen the dropping table commands like below: 1.drop table table_name; 2.drop table table_name cascade...
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Improve Database performance by analyzing tables
A little bit background why we need to analyze tables, indexes, clusters: Sometimes we have changes for the tables, for example if we have regular ETL process that constantly modifies the...
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Backup exsiting data and load data dump into Database
Export current data dump as a backup. Method 1: Use utility exp Login to the Database Server. Start a windows command prompt, click on Start > Run Type in cmd in the dialog box and click on OK....
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How to back up a table and import data from dump file
There are two approaches to back up a table: 1: Back up a table under the exsiting schema by creating a new table with tablename_bck nameing convention. Simply run the following query under the...
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Export a table to csv file and import csv file into database as a table
Today, I would be talking about exporting a table to csv file. This method is especially useful for advanced data manipulation within the csv file and I would also talk about how to import the csv data...
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