Ask the Experts
Ask the Experts
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Business Objects as a data warehousing tool
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Maximun number of columns for a composite primary key
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Resolving error ORA-06550
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Checking if varchar2 column contains only numbers
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Capturing errors from MERGE statement
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Catching error code that arises in PL/SQL
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When to use functions and stored procedures
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Running SQL*Loader from within PL/SQL procedure
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Resolving the "The instance Oracle VTDBS has been Terminated" error
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Resolving the TNS-12502 error
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Will tablespace show more free space after deleting records?
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Sequence of user process, server process, instance and session
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Transposing rows and columns in a SELECT statement
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Resolving an IMP-00002 error
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ON DELETE in a many-to-many relationship
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Using SQLLDR, EXPORT and IMPORT from a client machine
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Sending email from a stored procedure or trigger
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Oracle.exe taking 99% of CPU
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Table comparison stored procedure very slow
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Errors when running catalog.sql and catproc.sql files
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Format query output as header and detail lines
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Benefits, costs of running RAC
Could you address the benefits of running RAC with Oracle database servers running on Sun clusters? Continue Reading
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Calling a stored procedure from a trigger
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Lookup table explained
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Installation error: Java Runtime Environment not found
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Data dictionary versus the data directory
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200,000-record load taking too long with SQL*Loader
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Getting IP address, version, server names, etc. with SQL
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Oracle's equivalent of SQL Server's TOP command
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Trigger that will not fire when certain column is updated
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Extracting ddl for a view
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Querying a system table to get primary key info about a column
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Using dblink when defining cursor in PL/SQL routine
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Rows with consecutive dates
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Selecting all months even if they're missing
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Performing a dynamic search with the "any" option in SQL
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Does SERIAL# change during session?
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Using trigger predicate UPDATING on a column
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Spooling result set into file without the newline character
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Hashing functions explained
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Export error exp-00002
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Calculate an end date from a start date
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Using a WHERE... IN clause in a comma delimited field
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Bulk inserts
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DIRECT=Y versus DIRECT=N when importing
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Moving indexes from one tablespace to another
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Count males and females as well as total
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Can't open dump file using IMP
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Setting GLOBAL_NAMES to false to use dblink
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Disabling and enabling triggers
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Practicing Oracle commands online
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Alphanumeric primary key
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Composite primary keys and indexes
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Calculating next extent size
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Inserting values from one table into another, with another set of values
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OUTER JOIN instead of a NOT EXISTS subquery
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Calculating weeks between two dates
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How to validate zip code, city, and state code
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What is the file extension of an Oracle database?
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What values can be deduced from sys.dual?
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Full outer join in a many-to-many relationship, part 1
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X$KGLOB not visible
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Migrating data from DB2 to 9i
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Are left outer joins messing up the optimizer?
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Defragmenting a tablespace to free up contiguous space?
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Does Oracle log disconnections?
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Storing .pdf files inthe database
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Writing a Java tool to analyze redo log file
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How to retrieve a DB2 date in Julian format
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When does OSUSER in V$SESSION = Oracle?
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Inserting the '&' symbol in a string
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Adding a new NOT NULL field to an existing table
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Are hyphens allowed in standard SQL column names?
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Trigger to update TABLE 2 with TABLE 1 updates
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Searching with multiple keywords
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Importing a SQL Server table into Oracle
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Comparing two tables
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Preventing duplicate entries on multiple columns
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Nested tables in MySQL
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One query to return disjoint sets (MySQL)
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Summing across columns
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Sort order of composite primary keys
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What is the default tablespace?
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RAID and multiplexing
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Killing the session through an AFTER LOGON trigger
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Loading data from Oracle into flat files
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Joining tables that have composite primary keys
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Using SSADM and DSDM for rapid application development
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Flat file versus relational databases