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Titel
What is the difference of the Oracle Long Lock Running rules: "DBO - SPI Long Lock Running" and "DBO - Long Lock Running" ? -
Beschreibung
What is the difference of the Oracle Long Lock Running rules: "DBO - SPI Long Lock Running" and "DBO - Long Lock Running"? -
Lösung
Basically both rules are doing the same.
The rule "DBO - SPI Long Lock Running" will be used when Performance Investigator (PI) is enabled. If PI is disabled the rule "DBO - Long Lock Running" rule is being used.
Currently both rules are there due to historical reasons, but this will be changed in a future release.
DBO - Long Lock Running
This alarm is invoked when the length of a lock, which was detected during the most recent lock tree snapshot, has exceeded a predefined threshold. Long running locks can lead to a queue of sessions waiting to update the locked object, and in extreme cases, can cause applications to hang.
In Oracle cartridge releases prior to 5.7.5.1
- DBO - Long Lock Running fire when the lock time > 90 sec
- DBO - Long Lock Running Expanded fire when the lock time > 30 sec
The DBO - Long Lock Running Expanded rule was removed with the 5.7.5.1 and higher versions of the Oracle cartridge.
DBO - SPI Long Lock Running
This alarm is invoked when the length of a lock, which was detected during the most recent lock tree snapshot, has exceeded a predefined threshold. Long running locks can lead to a queue of sessions waiting to update the locked object, and in extreme cases can cause applications to hang.
Prior to the version 5.7.5.1 of the Oracle cartridge this rule was known as DBO - Long Lock Running for PA