Sybase Error – Database segment ‘%2’ is not valid. %3 freelist blocks were found, but %4 freelist blocks were expected. This segment cannot be used. %1

In this blog post, you’ll learn more about the Sybase Error Database segment ‘%2’ is not valid. %3 freelist blocks were found, but %4 freelist blocks were expected. This segment cannot be used. %1 and the reason for receiving this error

Sybase SQL Error Message

Database segment ‘%2’ is not valid. %3 freelist blocks were found, but %4 freelist blocks were expected. This segment cannot be used. %1

Reason for this Error

When a database segment is opened, the segment header is read and the number of freelist blocks read from the header is compared with the number of freelist blocks that are expected to be read from the segment header. If the numbers do not match, the segment cannot be used and the database must be restored from backup.