#43497 [Asn->Csd]: OCI8 XML/getClobVal leaks UGA memory

ID: 43497 Updated by: sixd@php.net Reported By: ghosh at q-one dot com -Status: Assigned +Status: Closed Bug Type: OCI8 related Operating System: Linux 2.6.22-14-server PHP Version: 5.2.5 Assigned To: sixd New Comment: This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. +---------------------------------------------------------- | Fixed in 5.2.6, 5.3, 6. Queries with OCI_RETURN_LOBS will | automatically free the DB's Temporary LOBs. Fetches | returning LOB locators need to use LOB->free(). See | oci8/tests/bug43497.phpt for examples. +----------------------------------------------------------- Previous Comments: ------------------------------------------------------------------------ [2008-01-15 17:30:32] ghosh at q-one dot com Sorry. I have been on vacation. I will try to check the new patch this week if possible. Definitely next week otherwise. ------------------------------------------------------------------------ [2008-01-15 02:30:42] sixd@php.net An enhanced patch was sent to the bug filer and Tony on 8th Jan. I'm still waiting for feedback . . . ------------------------------------------------------------------------ [2008-01-06 23:17:34] ghosh at q-one dot com Temporary LOBs are created in UGA memory. This is per-session, so the leak appears on a per-session basis. Nevertheless this is a problem, because PHP scripts dont necessarily have to run for a few seconds. PHP is a full-featured scripting language and can also be used from the command-line or to implement longer-running import-scripts. Even if not, the limit is quickly reached, when reading many rows like in my example. ------------------------------------------------------------------------ [2008-01-06 20:42:52] tony2001@php.net >What I don't understand: I thought OCI_RETURN_LOBS is just a short- >cut for those who don't want to write: That's what I don't understand either: does the leak appear only on per-session basis or Oracle doesn't free those LOBs at all? If the leak is only per-session, then users are not supposed even to notice it, since PHP requests are not supposed to take more than several seconds. ------------------------------------------------------------------------ [2007-12-29 22:37:21] ghosh at q-one dot com Really great! Thanks a lot!! This patch works. What I don't understand: I thought OCI_RETURN_LOBS is just a short-cut for those who don't want to write: $s=$result[0]->load(); $result[0]->free(); $result[0]=$s; If you use OCI_RETURN_LOBS you dont want to care about lobs but get the result as a string and forget about lobs altogether. So IMHO this should work as well. My specific problem is solved though. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/43497 -- Edit this bug report at http://bugs.php.net/?id=43497&edit=1