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Editorial Team
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Asked: 2026-05-23T05:09:10+00:00

I’m confused about time Oracle 10g XE performs insert. I implemented bulk insert from

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I’m confused about time Oracle 10g XE performs insert. I implemented bulk insert from xml file into several tables with programmatical transaction managment. Why one insert performs in a moment and another more than 10 minutes! I can’t wait more and stop it. I think there’s something more complex I have not payed attention yet.

Update:

I found lock using Monitor.

Waits     
Event   enq: TX - row lock contention
name|mode   1415053316
usnusnusnusn<<16 | slot 327711
sequence    162

SQL   
INSERT INTO ESKD$SERVICESET (ID, TOUR_ID, CURRENCY_ID) VALUES (9, 9, 1)

What does it mean and how should I resolve it?

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1 Answer

  1. Editorial Team

    TX- Enqueues are well known and a quick google will give you a clear answer.

    From that article:

    1) Waits for TX in mode 6 occurs when a session is waiting for a row level lock that is already held by another session. This occurs when one user is updating or deleting a row, which another session wishes to update or delete. This type of TX enqueue wait corresponds to the wait event enq: TX – row lock contention.

    If you have lots of simultaneous inserts and updates to a table you want each transaction to be a short as possible. Get in, get out… the longer things sit in between, the longer the delays for OTHER transactions.

    PURE GUESS:

    I have a feeling that your mention of “programmatical transaction managment” is that you’re trying to use a table like a QUEUE. Inserting a start record, updating it frequently to change the status and then deleting the ‘finished’ ones. That is always trouble.

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