on why even a temp table will take more than usual time?
There could be several reasons why a temporary table might take more time than usual to create or operate on. Some potential factors to consider include:
Data Volume: If the temporary table contains a large amount of data, it will naturally take longer to process. Optimizing the query or indexing the temporary table could help improve performance.
Resource Contention: If the system is experiencing heavy load or resource contention, creating and using temporary tables can be slower than expected. Monitoring system resources and optimizing database can help alleviate this issue.
Locking and Concurrency: Temporary tables, like regular tables, may be subject to locking and concurrency issues, especially in a multi-user environment. Analyzing the transaction isolation level and concurrent access patterns can provide insights into bottlenecks.
Query Complexity: The complexity of the query or operations involving the temporary table can impact performance Evaluating the query execution plan and considering potential query optimizations may improve speed.
Indexing and Statistics: Ensuring that appropriate indexes and statistics are in for the temporary table and any related queries can significantly enhance performance.
System Configuration: The's hardware and software configuration, as well as the database's settings, can influence the performance of temporary tables. Adjusting these configurations based on best practices performance tuning guidelines can lead to improvements.
To address the issue, it's essential to analyze these potential factors and consider optimizing the temporary table's creation, operations, and related queries to improve performance. Additionally, monitoring and profiling the system during the creation usage of temporary tables can provide valuable insights into performance bottlenecks.