Please be aware that the SAP SQL Anywhere Forum will be shut down on August 29th, 2024 when all it's content will be migrated to the SAP Community.

How to extract data from a log file.

It is to do this ?! My database showed error Assertion Failed.

asked 12 Aug '15, 15:02

Walmir%20Taques's gravatar image

Walmir Taques
accept rate: 12%

You can use the builtin DBTRAN utility to translate the log (possibly using -j to start at a particular checkpoint) into a script with the according SQL statements.

I'd like to add that you should check whether your database file has become corrupt - not every assertion means a corrupt database. And if it seems corrupt, you usually should be able to apply the current log to your last backup... - that would prevent the need to "manually" re-apply operations... (or only those that had not been committed but were rollbacked when the assertion happened by making use of DBTRAN -a).

permanent link

answered 12 Aug '15, 15:50

Volker%20Barth's gravatar image

Volker Barth
accept rate: 34%

edited 12 Aug '15, 15:59

Oops, why does my answer misses the "edit" button?

Ah, navigating to another page and back brings back the "edit" button.

(12 Aug '15, 15:56) Volker Barth
Replies hidden

The user started the last backup using the -f command line it can not apply log file. He started the last backup and made entries in the system. when I

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C: \ Users \ walmir> dblog -tc: \ db \ sis.log c: \ db \ sis.db

SQL Anywhere Transaction Log Utility Version
"c: \ db \ sis.db" was using log file "sis.log"
"c: \ db \ sis.db" is using the mirror log file
"c: \ db \ sis.db" is now using log file "c: \ db \ sis.log"
Transaction log starting offset is 0945518960
Transaction log current relative offset is 0000286142

C: \ Users \ walmir>

not in error,

but when I

displays error Assertion Failed

alt text

(17 Aug '15, 15:53) Walmir Taques

Hm, I'm not sure what you have tried to do - why do you change the location of the log file?

In case a database has to be recovered without using a log file (i.e. dbeng9 -f), then it should shutdown afterwards and will create a new (empty) log file during the next normal start automatically...

(18 Aug '15, 01:59) Volker Barth
Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text]( "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:


question asked: 12 Aug '15, 15:02

question was seen: 1,910 times

last updated: 18 Aug '15, 01:59