Calibre - Invalid Library Error

junkyardwillie · 09-15-2010, 09:57 PM

I just upgraded my OS and I was trying to reimport my library into Calibre but I'm getting this error whenever I try to direct Calibre to my old folder structure. It was on an external drive so nothing changed in that folder when I updated the system. I'm not sure how to get my library to reimport without having to copy my books all over again which will be a major hassle with 1,000+ books.

Here is the error:
ERROR: Invalid database: <p>An invalid library already exists at H:/Ebook/Calibre Library, delete it before trying to move the existing library.<br>Error: attempt to write a readonly database
RemoteTraceback (most recent call last):
File "site-packages\calibre\library\sqlite.py", line 175, in run
OperationalError: attempt to write a readonly database

Traceback (most recent call last):
File "site-packages\calibre\gui2\wizard\__init__.py", line 521, in move_library
File "site-packages\calibre\library\database2.py", line 144, in __init__
File "site-packages\calibre\library\database2.py", line 181, in initialize_dynamic
File "site-packages\calibre\library\sqlite.py", line 211, in run
DatabaseException: attempt to write a readonly database
RemoteTraceback (most recent call last):
File "site-packages\calibre\library\sqlite.py", line 175, in run
OperationalError: attempt to write a readonly database

Any help would be much appreciated. Thanks

kovidgoyal · 09-15-2010, 11:04 PM

the metadata.db file in your calibre library folder is set to readonly. Change its permissions back to read/write

junkyardwillie · 09-18-2010, 12:02 AM

Hey, I was away for a few days so I wasn't able to test it out. Thanks for the quick reply. It seems like I was running into that Windows 7 folder permission error where I couldn't remove the read only permission but I moved it to another folder and got my library imported back thank god! I just wanted to say thanks again, Calibre has been an awesome program, keep up the good work.

09-15-2010, 09:57 PM	#1
junkyardwillie Addict Posts: 316 Karma: 570 Join Date: Apr 2008 Device: Onyx Note Pro, Kobo H20 and iPad	Calibre - Invalid Library Error I just upgraded my OS and I was trying to reimport my library into Calibre but I'm getting this error whenever I try to direct Calibre to my old folder structure. It was on an external drive so nothing changed in that folder when I updated the system. I'm not sure how to get my library to reimport without having to copy my books all over again which will be a major hassle with 1,000+ books. Here is the error: ERROR: Invalid database: <p>An invalid library already exists at H:/Ebook/Calibre Library, delete it before trying to move the existing library.<br>Error: attempt to write a readonly database RemoteTraceback (most recent call last): File "site-packages\calibre\library\sqlite.py", line 175, in run OperationalError: attempt to write a readonly database Traceback (most recent call last): File "site-packages\calibre\gui2\wizard\__init__.py", line 521, in move_library File "site-packages\calibre\library\database2.py", line 144, in __init__ File "site-packages\calibre\library\database2.py", line 181, in initialize_dynamic File "site-packages\calibre\library\sqlite.py", line 211, in run DatabaseException: attempt to write a readonly database RemoteTraceback (most recent call last): File "site-packages\calibre\library\sqlite.py", line 175, in run OperationalError: attempt to write a readonly database Any help would be much appreciated. Thanks

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09-15-2010, 11:04 PM	#2
kovidgoyal creator of calibre Posts: 45,219 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	the metadata.db file in your calibre library folder is set to readonly. Change its permissions back to read/write

09-18-2010, 12:02 AM	#3
junkyardwillie Addict Posts: 316 Karma: 570 Join Date: Apr 2008 Device: Onyx Note Pro, Kobo H20 and iPad	Hey, I was away for a few days so I wasn't able to test it out. Thanks for the quick reply. It seems like I was running into that Windows 7 folder permission error where I couldn't remove the read only permission but I moved it to another folder and got my library imported back thank god! I just wanted to say thanks again, Calibre has been an awesome program, keep up the good work.

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