[sqlite] database is locked with create
Hi all, I am new to sqlite. I build sqlite with buildroot without any issue. After loading sqlite on my embedded board, I always get one error message:database is locked. Here is my operation on my board: #sqlite3 ex1 SQLite version 3.6.23.1 Enter .help for instructions Enter SQL statements terminated with a ; sqlite create table tbl1(one varchar(10), two smallint); Error: database is locked sqlite Any suggestion will be highly appreciated. Regards, David J. Choi ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] database is locked with create
Hi Simon, Thank you for your clear instruction. But still I have the same issue. Here is my test procedures: #cd /home #sqlite3 ex1 SQLite version 3.6.23.1 Enter .help for instructions Enter SQL statements terminated with a ; sqlitecreate table tbl1(one varchar(10),two smallint); sqlite3_exec: PH3: rc=101sqlite3_exec: PH7:rc=101sqlite3_exec: PH8:rc=0sqlite3_exec: PH9sqlite3_exec: PH10:rc=0sqliteErrorFromPosixError: SQLITE_BUSY: sqliteIOErr=3850 Error: database is locked sqlite .exit /home # ls -l total 4 drwxr-xr-x2 default default 0 Feb 19 11:08 default -rw-r--r--1 root root 0 Feb 19 13:26 ex1 /home # rm ex1 /home # sqlite3 ex1 SQLite version 3.6.23.1 Enter .help for instructions Enter SQL statements terminated with a ; sqlite create table tbl1(one varchar(10), two smallint); sqlite3_exec: PH3: rc=101sqlite3_exec: PH7:rc=101sqlite3_exec: PH8:rc=0sqlite3_exec: PH9sqlite3_exec: PH10:rc=0sqliteErrorFromPosixError: SQLITE_BUSY: sqliteIOErr=3850 Error: database is locked sqlite .exit /home # ls default ex1 /home # ls -l ex1 -rw-r--r--1 root root 0 Feb 19 13:27 ex1 /home # rm ex1 /home # touch aaa /home # ls aaa default ex1 /home # echo this is test file aaa /home # cat aaa this is test file Regards, David J. Choi -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Simon Slavin Sent: Tuesday, February 19, 2013 9:14 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] database is locked with create On 19 Feb 2013, at 5:01pm, Choi, David david.c...@micrel.com wrote: I am new to sqlite. I build sqlite with buildroot without any issue. After loading sqlite on my embedded board, I always get one error message:database is locked. Here is my operation on my board: #sqlite3 ex1 SQLite version 3.6.23.1 Enter .help for instructions Enter SQL statements terminated with a ; sqlite create table tbl1(one varchar(10), two smallint); Error: database is locked sqlite Any suggestion will be highly appreciated. Quit the shell program. Locate the database file called 'ex1' and make sure it is in the folder you expect it to be in. If the database file still exists, delete it. Try again, letting the shell program create a new database. If this also doesn't work, Check the privileges in the folder where the database file is created. Do you have write privileges inside that folder ? Try using copy command or a simple text editor to make a file in that folder. Does it work or do you get a similar error to 'file is locked' ? Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] database is locked with create
Hi Richard, I think your guess is highly possible because the error comes from sqliteErrorFromPosixError(). In that case, how can I fix the issue? Regards, David J. Choi -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Richard Hipp Sent: Tuesday, February 19, 2013 9:44 AM To: General Discussion of SQLite Database Subject: Re: [sqlite] database is locked with create On Tue, Feb 19, 2013 at 12:01 PM, Choi, David david.c...@micrel.com wrote: Hi all, I am new to sqlite. I build sqlite with buildroot without any issue. After loading sqlite on my embedded board, I always get one error message:database is locked. Here is my operation on my board: #sqlite3 ex1 SQLite version 3.6.23.1 Enter .help for instructions Enter SQL statements terminated with a ; sqlite create table tbl1(one varchar(10), two smallint); Error: database is locked sqlite Any suggestion will be highly appreciated. I'm guessing that whatever embedded operating system you are using does not (correctly) support posix advisory locks. But that's just a guess. -- D. Richard Hipp d...@sqlite.org ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] database is locked with create
Hi Richard, It seems that my version is not accept the command. By the way, what is the version that you are referring to? Here is my operation: /home # sqlite3 --help Usage: sqlite3 [OPTIONS] FILENAME [SQL] FILENAME is the name of an SQLite database. A new database is created if the file does not previously exist. OPTIONS include: -helpshow this message -init filename read/process named file -echoprint commands before execution -[no]header turn headers on or off -bailstop after hitting an error -interactive force interactive I/O -batch force batch I/O -column set output mode to 'column' -csv set output mode to 'csv' -htmlset output mode to HTML -lineset output mode to 'line' -listset output mode to 'list' -separator 'x' set output field separator (|) -nullvalue 'text'set text string for NULL values -version show SQLite version /home # sqlite3 -version 3.6.23.1 /home # sqlite3 -vfs unix-none ex1 sqlite3: Error: unknown option: -vfs Use -help for a list of options. Regards, David J. Choi -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Richard Hipp Sent: Tuesday, February 19, 2013 1:44 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] database is locked with create On Tue, Feb 19, 2013 at 4:39 PM, Choi, David david.c...@micrel.com wrote: Hi Richard, I think your guess is highly possible because the error comes from sqliteErrorFromPosixError(). In that case, how can I fix the issue? Try adding the -vfs unix-none command-line option: sqlite3 -vfs unix-none ex1 That will disable file locking. Be warned, however, that with file locking disabled, two processes trying to access the database at the same time can lead to problems.-- D. Richard Hipp d...@sqlite.org ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] database is locked with create
Hi Richard, Thank you Richard. I get the latest source(sqlite-amalgamation-3071502.zip) and cross-compile. And follow your instruction: sqlite3 -vfs unix-none ex1 That issue is gone. Really appreciated for your quick and exact response. David J. Choi -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Richard Hipp Sent: Tuesday, February 19, 2013 4:04 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] database is locked with create On Tue, Feb 19, 2013 at 6:37 PM, Choi, David david.c...@micrel.com wrote: Hi Richard, It seems that my version is not accept the command. By the way, what is the version that you are referring to? Get the latest: 3.7.15.1. There is no reason not to. Here is my operation: /home # sqlite3 --help Usage: sqlite3 [OPTIONS] FILENAME [SQL] FILENAME is the name of an SQLite database. A new database is created if the file does not previously exist. OPTIONS include: -helpshow this message -init filename read/process named file -echoprint commands before execution -[no]header turn headers on or off -bailstop after hitting an error -interactive force interactive I/O -batch force batch I/O -column set output mode to 'column' -csv set output mode to 'csv' -htmlset output mode to HTML -lineset output mode to 'line' -listset output mode to 'list' -separator 'x' set output field separator (|) -nullvalue 'text'set text string for NULL values -version show SQLite version /home # sqlite3 -version 3.6.23.1 /home # sqlite3 -vfs unix-none ex1 sqlite3: Error: unknown option: -vfs Use -help for a list of options. Regards, David J. Choi -Original Message- From: sqlite-users-boun...@sqlite.org [mailto: sqlite-users-boun...@sqlite.org] On Behalf Of Richard Hipp Sent: Tuesday, February 19, 2013 1:44 PM To: General Discussion of SQLite Database Subject: Re: [sqlite] database is locked with create On Tue, Feb 19, 2013 at 4:39 PM, Choi, David david.c...@micrel.com wrote: Hi Richard, I think your guess is highly possible because the error comes from sqliteErrorFromPosixError(). In that case, how can I fix the issue? Try adding the -vfs unix-none command-line option: sqlite3 -vfs unix-none ex1 That will disable file locking. Be warned, however, that with file locking disabled, two processes trying to access the database at the same time can lead to problems.-- D. Richard Hipp drh@sqlite.org___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users -- D. Richard Hipp d...@sqlite.org ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
