<p>just to chime in on this ticket, I am also seeing this same behaviour.</p>

<p>Kamailio version:</p>

<pre><code>version: kamailio 4.3.4 (x86_64/linux) 0ec860
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, DBG_QM_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 0ec860 
compiled on 17:42:12 Nov 25 2015 with gcc 4.4.7
</code></pre>

<p>Sample log message:</p>

<pre><code>Dec 18 10:27:13 kam_proxy01[25942]: ERROR: db_sqlite [dbase.c:489]: db_sqlite_commit(): sqlite commit failed: constraint failed
Dec 18 10:27:13 kam_proxy01[25942]: ERROR: db_sqlite [dbase.c:138]: db_sqlite_cleanup_query(): finalize failed: pua.call_id may not be NULL
Dec 18 10:27:13 kam_proxy01[25942]: ERROR: pua [pua.c:1179]: db_update(): while inserting in db table pua
</code></pre>

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