.......................................................................... 8 Change to gbak -R Semantics ............................................................................................... version 2 efficiently cleans up dead threads straight away. Command-line Tools Change to gbak -R Semantics An important change has been done to prevent accidental database overwrites as the result of users use the full syntax, you are expected to know what this restore mode actually means and have some recovery strategy available if the backup subsequently turns out to be unrestorable. Performance The following

should match, except under migration conditions with Dialect 2. This reference describes the semantics of SQL Dialect 3 unless specified otherwise. Chapter 2. SQL Language Structure 20 2.1.3. Error the name of the UDR routine to call () and/or a string () with UDR-specific semantics. Configuration of external modules and UDR engines is not covered further in this Language Reference triggers are a specific type of database trigger, so most rules for and semantics of database triggers also apply for DDL triggers. Semantics 1. BEFORE triggers are fired before changes to the system tables

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.3. Automatic Two-phase Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 13. Database Validation and Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 13.2. Database Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stored in RDB$TRANSACTIONS and can be used for recovery purposes. Client Int32 Operation code (op_prepare2) Int32 Transaction handle Buffer Recovery information Server Generic response 4.7. Transaction

shows that the switch must be "suppress".  The log file must not exist. If it does, the backup or recovery operation will fail: tux> rm employee.log tux> gbak -backup employee.fdb employee.fbk -y employee command, if the first filename is a database backup file name then gbak will default to running a recovery of the database provided that you specify one of -c[create database], -rep[lace_database]

files are additional files that can be used by single and multiple file databases to assist in recovery after a failure of some kind. They are not helpful in the case of a DROP DATABASE as the Chapter fdb database from the dumpfile. If the dumpfile is corrupt, then we will lose the database as the recovery starts by wiping the database. If we now dump the generator page as before, we see the following:

should match, except under migration conditions with Dialect 2. This reference describes the semantics of SQL Dialect 3 unless specified otherwise. Chapter 2. SQL Language Structure 18 2.1.3. Error open flag still set -234 335544491 logh_open_flag2 Log file @1 not closed properly; database recovery may be required -235 335544492 logh_diff_dbname Database name in the log file @1 is different

obscurity rather than true security. Witness the number of companies around that provide “data recovery” services, by which they mean bypassing or breaking the supposed security of obscured data. Encryption

open flag still set -234 335544491 logh_open_flag2 Log file %s not closed properly; database recovery may be required -235 335544492 logh_diff_dbname Database name in the log file %s is different

but open flag still set -234 335544491 logh_open_flag2 Log file @1 not closed properly; database recovery may be required -235 335544492 logh_diff_dbname Database name in the log file @1 is different