Re: [firebird-support] Multiple Embedded Connections
Hi Alan, I notice that it is now possible to connect to a database via the embedded server and simultaneously connect via other embedded processes to the same database file. This was not possible in previous version - the second process would be locked out. Can someone lead me to an explanation of how these multiple connections are managed? Which embedded server will coordinate updates and modifications to the database? It appears that updates from one process are visible to the other(s) but I'm not sure how the second would know if a transaction is being managedin the first - is there a lock file being written to somewhere that I can't find? (WIN32) V2.5 From the 2.5 Quick Start Guide: Windows Embedded now contains a SuperClassic instead of a SuperServer engine. File locks are shared, so a database can be accessed by one or more Embedded servers and a regular Classic or SuperClassic server at the same time. Consult the Firebird 2.5 Release Notes for full details. Cheers, Paul Vinkenoog
RE: [firebird-support] Multiple Embedded Connections
Hi Alan, I notice that it is now possible to connect to a database via the embedded server and simultaneously connect via other embedded processes to the same database file. This was not possible in previous version - the second process would be locked out. Can someone lead me to an explanation of how these multiple connections are managed? Which embedded server will coordinate updates and modifications to the database? It appears that updates from one process are visible to the other(s) but I'm not sure how the second would know if a transaction is being managedin the first - is there a lock file being written to somewhere that I can't find? (WIN32) V2.5 From the 2.5 Quick Start Guide: Windows Embedded now contains a SuperClassic instead of a SuperServer engine. File locks are shared, so a database can be accessed by one or more Embedded servers and a regular Classic or SuperClassic server at the same time. Consult the Firebird 2.5 Release Notes for full details. Yes - but where is this global lock table? It doesn't tell me if it's a file somewhere or in the memory of the first server loaded? Alan Cheers, Paul Vinkenoog ++ Visit http://www.firebirdsql.org and click the Resources item on the main (top) menu. Try Knowledgebase and FAQ links ! Also search the knowledgebases at http://www.ibphoenix.com ++ Yahoo Groups Links
Re: [firebird-support] Multiple Embedded Connections
Alan McDonald wrote: Windows Embedded now contains a SuperClassic instead of a SuperServer engine. File locks are shared, so a database can be accessed by one or more Embedded servers and a regular Classic or SuperClassic server at the same time. Consult the Firebird 2.5 Release Notes for full details. Yes - but where is this global lock table? It doesn't tell me if it's a file somewhere or in the memory of the first server loaded? Iirc, it's a lock file in ProgramData\Firebird. Paul Vinkenoog
