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An Introduction to IDS Troubleshooting Joseph Lobo IBM

An Introduction to IDS Troubleshooting Joseph Lobo IBM. IDS Troubleshooting. Informix and the UNIX System Assertion Failures Slow and Hung Programs Test Cases. onstat -u. Userthreads address flags sessid user tty wait tout locks nreads nwrites

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An Introduction to IDS Troubleshooting Joseph Lobo IBM

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  1. An Introduction to IDS Troubleshooting Joseph Lobo IBM

  2. IDS Troubleshooting • Informix and the UNIX System • Assertion Failures • Slow and Hung Programs • Test Cases

  3. onstat -u Userthreads address flags sessid user tty wait tout locks nreads nwrites a14a010 ---P--D 0 root - 0 0 0 22 39 a14a444 ---P--F 0 root - 0 0 0 0 0 a14a878 ---P--F 0 root - 0 0 0 0 0 a14acac ---P--F 0 root - 0 0 0 0 0 a14b0e0 ---P--F 0 root - 0 0 0 0 0 a14b514 ---P--B 9 root - 0 0 0 0 6 a14b948 ---P--D 0 root - 0 0 0 0 0 a14bd7c L--PR-- 56 root 1 a03b6b4 -1 2 0 0 a14c1b0 L--PR-- 58 root 1 a03b6b4 30 1 0 0 a14c5e4 L--PR-- 57 root 1 a03b6b4 -1 2 0 0 a14ca18 L--PR-- 55 root 1 a03b688 -1 2 0 0 a14ce4c L--PR-- 54 root 1 a03b6b4 30 1 0 0 a14d280 L--PR-- 53 root 1 a03b6b4 -1 2 0 0 a14d6b4 Y-BP--- 52 root 1 a327220 0 14 0 6 a14dae8 Y--P--- 51 root 1 a3269f8 0 3 0 0 15 active, 128 total, 20 maximum concurrent

  4. Tools • Lockwaiters • Dbtop

  5. Test Your Test Case • Before you send your test case, you should verify that it works • Small program or SQL • Small subset of data • Instructions on how to reproduce • Verify that your instructions reproduce the problem

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