[firebird-support] Can I restrict sysdba to login from localhost?
SYSDBA has full access to firebird database server. Can I restrict the sysdba to be able to login to firebird server on localhost only?
[firebird-support] Firebird doesn't free the RAM properly after a long time usage
I am running Firebird-3.0.2.32703-0_x64.zip on ArchLinux. The firebird service has working for more than 20 days without stop. At some point, I disconnect all client connections to the firebird service. I notice the /tmp (using tmpfs) folder has these file handles without free. This is the memory status: # free -h totalusedfree shared buff/cache available Mem:21G 13G4.6G3.2G3.7G4.8G Swap:0B 0B 0B and the lsof status: [root@archlinux] # lsof COMMAND PID USER FDTYPE DEVICE SIZE/OFF NODE NAME firebird367 firebird cwd DIR 0,39 80 14496 /tmp firebird367 firebird DEL-R REG 0,39 160633 /tmp/firebird/fb12_monitor_020817000a00 firebird367 firebird DEL-R REG 0,39 119619 /tmp/firebird/fb12_monitor_020817000a00 firebird367 firebird DEL-R REG 0,39 13015 /tmp/firebird/fb12_monitor_020809001a00 firebird367 firebird DEL-R REG 0,39 13843 /tmp/firebird/fb_lock_020809001a00 firebird367 firebird mem-R REG 0,391048576 16552 /tmp/firebird/fb12_monitor_02081f001a00 firebird367 firebird mem-R REG 0,391048576 13838 /tmp/firebird/fb_lock_02081f001a00 firebird367 firebird mem-R REG 0,391048576 16533 /tmp/firebird/fb12_monitor_02080a001a00 firebird367 firebird DEL-R REG 0,39 13814 /tmp/firebird/fb_lock_02080a001a00 firebird367 firebird DEL-R REG 0,39 1444 /tmp/firebird/fb_user_mapping firebird367 firebird DEL-R REG 0,39 13777 /tmp/firebird/fb12_trace firebird367 firebird1u REG 0,39 0 13776 /tmp/firebird/fb_init (deleted) firebird367 firebird2uR REG 0,39 4192 13777 /tmp/firebird/fb12_trace (deleted) firebird367 firebird3u REG 0,39 0 13778 /tmp/firebird/fb_trace_o5S0GX (deleted) firebird367 firebird8uR REG 0,391048576 1444 /tmp/firebird/fb_user_mapping (deleted) firebird367 firebird 11uR REG 0,391048576 160633 /tmp/firebird/fb12_monitor_020817000a00 (deleted) firebird367 firebird 14uR REG 0,391048576 13814 /tmp/firebird/fb_lock_02080a001a00 (deleted) firebird367 firebird 15uR REG 0,391048576 16533 /tmp/firebird/fb12_monitor_02080a001a00 firebird367 firebird 18uR REG 0,391048576 13838 /tmp/firebird/fb_lock_02081f001a00 firebird367 firebird 19uR REG 0,391048576 16552 /tmp/firebird/fb12_monitor_02081f001a00 firebird367 firebird 23uR REG 0,391048576 13843 /tmp/firebird/fb_lock_020809001a00 (deleted) firebird367 firebird 24uR REG 0,391048576 13015 /tmp/firebird/fb12_monitor_020809001a00 (deleted) firebird367 firebird 38uR REG 0,391048576 119619 /tmp/firebird/fb12_monitor_020817000a00 (deleted) firebird367 firebird 40uW REG 0,39 1151336448 14292 /tmp/fb_table_X7copz (deleted) firebird367 firebird 45uW REG 0,39 1945894912 14299 /tmp/fb_table_vdAaLR (deleted) firebird367 firebird 46uW REG 0,39 324427776 14300 /tmp/fb_table_7tG6VK (deleted) firebird367 368 firebird cwd DIR 0,39 80 14496 /tmp firebird367 368 firebird DEL-R REG 0,39 160633 /tmp/firebird/fb12_monitor_020817000a00 firebird367 368 firebird DEL-R REG 0,39 119619 /tmp/firebird/fb12_monitor_020817000a00 firebird367 368 firebird DEL-R REG 0,39 13015 /tmp/firebird/fb12_monitor_020809001a00 firebird367 368 firebird DEL-R REG 0,39 13843 /tmp/firebird/fb_lock_020809001a00 firebird367 368 firebird
[firebird-support] How to install Firebird 1.5 on ArchLinux x86-64
I am trying to install FirebirdSS-1.5.6.5026-0.i686 on Linux archlinux 4.13.5-1-ARCH x86-64 but fail. I suspect it is due to ELF problem but not sure how to make it work. When I try to run ./fbserver, I encounter -bash: ./fbserver: No such file or directory # readelf -l fbserver Elf file type is EXEC (Executable file) Entry point 0x804da70 There are 7 program headers, starting at offset 52 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align PHDR 0x34 0x08048034 0x08048034 0x000e0 0x000e0 R E 0x4 INTERP 0x000114 0x08048114 0x08048114 0x00013 0x00013 R 0x1 [Requesting program interpreter: /lib/ld-linux.so.2] LOAD 0x00 0x08048000 0x08048000 0x205d38 0x205d38 R E 0x1000 LOAD 0x206000 0x0824e000 0x0824e000 0x13b84 0x19f04 RW 0x1000 DYNAMIC0x2194ec 0x082614ec 0x082614ec 0x00108 0x00108 RW 0x4 NOTE 0x000128 0x08048128 0x08048128 0x00020 0x00020 R 0x4 GNU_EH_FRAME 0x1e2498 0x0822a498 0x0822a498 0x0517c 0x0517c R 0x4 It seems related to /lib/ld-linux.so.2, but I could find this file in my /lib folder.
[firebird-support] How to use isc_spb_bkp_skip_data or isc_spb_res_skip_data in firebird parameter block?
I would like to use skip some tables while backup or restore firebird database in Firebird 3. How to use these parameters in isc_service_start?
Re: [firebird-support] An SQL query perform badly after firebird database file size grow beyond 8GB
It is strange why the firebird choose wtong plan when database file size grow beyond 8GB. I thought it should be consistent for same query.
[firebird-support] An SQL query perform badly after firebird database file size grow beyond 8GB
I am using Firebird 2.5.5 x64 on Windows 8.1 x64. I wrote an application access a Firebird database. So far so good. One day, I notice a function running query accessing the database become extremely slow. After I debug, I found the query is the cause: SELECT MAX(A.PostDate) MaxPostDate FROM SL_CS A, SL_CSDTL B WHERE A.DocKey=B.DocKey AND A.Code='300-10001' AND B.ItemCode='OCC' AND B.UOM='UNIT' AND A.Cancelled='F' AND B.UnitPrice<>0 Further investigation and I found an interesting problem. If the database file size is below 8GB, the query works normal. Once the database file size grow beyond 8GB, the query become very slow. Here is the plan before 8GB: PLAN JOIN (B INDEX (SL_CSDTL_ITEMCODE), A INDEX (RDB$PRIMARY212)) Adapted Plan PLAN JOIN (B INDEX (SL_CSDTL_ITEMCODE), A INDEX (INTEG_2872)) -- Performance info -- Prepare time = 0ms Execute time = 312ms Avg fetch time = 312.00 ms Current memory = 14,858,352 Max memory = 14,972,720 Memory buffers = 2,048 Reads from disk to cache = 42,429 Writes from cache to disk = 0 Fetches from cache = 360,726 And the plan after grow to 8GB: PLAN JOIN (A INDEX (SL_CS_CODE), B INDEX (SL_CSDTL_DOCKEY, SL_CSDTL_ITEMCODE)) -- Performance info -- Prepare time = 0ms Execute time = 2m 0s 875ms Avg fetch time = 120,875.00 ms Current memory = 14,943,040 Max memory = 15,005,768 Memory buffers = 2,048 Reads from disk to cache = 44,818 Writes from cache to disk = 0 Fetches from cache = 11,454,178 Both plan works on same tables with same row count. Increasing of database file size is due to insertion on other tables. I believe the performance issue was due to "Fetches from cache" increasing dramatically on 2nd plan. Is this an issue related to Windows file system? Firebird service or my query?
[firebird-support] Encounter invalid request BLR at offset %d when running gbak while other changing database's meta data
Hi, I start two connections to a firebird 2.5.3 x64 server running the following actions: Connection1: Keep running CREATE GLOBAL TEMPORARY and DROP TABLE on a database for 5 minutes Connection2: Run GBAK to backup the database In connection 2, I encounter this error regularly when running GBAK: gbak: ERROR:invalid request BLR at offset 51 gbak: ERROR:table id 16809 is not defined gbak: ERROR:gds_$compile_request failed gbak:Exiting before completion due to errors As learned from other's experience, I knew it is not encourage to backup database while others trying to change the metadata of database. Is there a way to detect either: Prior to GBAK, detech is someone is changing meta data OR Prior to changing meta data, is someone running GBAK on the database Best Regards, Chee-Yang Chau
[firebird-support] Unable to repair a corrupt database
I have a Firebird 2.5.2 database (ODS 11.2). The database has corrupted. When I open the database, I receive a message page 1577 is of wrong type (expected 4, found 5) I have tried using gfix, gfix -mend, gbak to attempt backup but it doesn't work. I also try if qli may extract the data, and again, I can't open the database in ready statement. Same corrupt message prompt out. I even try to change the byte at position (1577 * 4096) from 0x05 to 0x04 but it turn out to the following message when I perform gfix or gbak: Reached the end of the file. I think IBSurgeon shall works but the price isn't something I can afford. Is there any other alternate way to fix the database?
