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If you're interested in a more detailed information of the process of fixing the database, as well as explanation of some types of corruption, take a look at the following page: In this case, you can try to restore your database using -N command switch to gbak. You can enable them later when you fix other problems and get a working database again.Īnother reason restore might fail is when you have broken data, so some of validity constraints (check constraints, etc.) cannot be satisfied. To work around this, connect to database with isql tool using -nodbtriggers option and then disable those triggers. For example, a database trigger might use some table which has a broken index, etc. One of the reasons why backup or restore can fail is if some broken database triggers exist, and prevent connection to the database. If not, you can try to create an empty database with the same structure and pump the data to it. If you succeed, you have fixed the problem and have a functional database.

use GBAK -c to restore backup to a new database.

use GBAK -b -g to backup the database.

use GFIX -mend to prepare corrupt database for backup.If problem is not too serious, you can try to backup the broken db and restore under a new name:

use GFIX with -v and -f to do full validation.

use GFIX with -v option to validate the database file.

make a copy of database file (or two copies) and work on that.

disconnect users and disable incoming connections to the database.

While this particular database wasn't fixed, i guess the solution is try IB FirstAID. is wrong type (expected 0 found 1) I have a 200 GB Firebird database (created with Firebird 2.1.3, currently running 2.1.5), and it appears to be corrupted. If backup completed successfully, restore the database: gbak -c -v -user SYSDBA. Start Firebird server and run the following commands: gfix.exe -v -full -user SYSDBA -pass masterkey pathtoyourdatabase gfix.exe -mend -ig -user SYSDBA -pass masterkey pathtoyourdatabase gbak -b -g -v -user SYSDBA -pass masterkey pathtoyourdatabase pathtobackup Try to run them all, even if gfix shows errors. It's even able to create the structure for Firebird database from scratch, so you can use it as a migration tool to migrate from other DBMS systems. If you wish to import data from non-Firebird data sources, then IB DataPump is probably the best free option available.