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Retrieving logs takes forever
Posted on 2013-01-03
Takes forever to pull logs.
The logging is based on msg_id, msg_ts, msg fields
It takes forever to retrieve logs from this table.
Explain plan suggests it does a full table scan on mylog table which contain log entries since Jul-2012, having 500,000 entries.
There are no partitions or index available on the table.
It is not possible to add partitions now as all programs in my project will have to be modified so that the partition key is also sent by mypkg.write_log(v_msg,v_da
Index on msg filed does not seem to be a proper way since there is no key field in it just text.
How can i pull the logs faster, what are my alternatives.
The logging is based on msg_id, msg_ts, msg fields
It takes forever to retrieve logs from this table.
Explain plan suggests it does a full table scan on mylog table which contain log entries since Jul-2012, having 500,000 entries.
There are no partitions or index available on the table.
It is not possible to add partitions now as all programs in my project will have to be modified so that the partition key is also sent by mypkg.write_log(v_msg,v_da
Index on msg filed does not seem to be a proper way since there is no key field in it just text.
How can i pull the logs faster, what are my alternatives.
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Queries from a table with 500,000 entries (records) and no indexes and no partitions will be **SLOW**! If you can't (or won't) add an index or some kind of partitioning scheme, your only option to speed it up is to get some kind of solid-state storage device and move this table from the disk partition where (I'm guessing) it is now onto some kind of SSD. There are multiple hardware options these days for SSD storage.
Most likely a cheaper alternative would be to add an index and/or a partitioning scheme of some kind to this table. If it doesn't include a date column at all now, this could also include adding a date column with a name something like "date_created" and a trigger to populate the new date column.
Most likely a cheaper alternative would be to add an index and/or a partitioning scheme of some kind to this table. If it doesn't include a date column at all now, this could also include adding a date column with a name something like "date_created" and a trigger to populate the new date column.
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