diff --git a/lib/srdb1/db_query.c b/lib/srdb1/db_query.c
index dbde735..8efc15c 100644
--- a/lib/srdb1/db_query.c
+++ b/lib/srdb1/db_query.c
@@ -54,6 +54,10 @@ int db_do_query(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _op,
 		LM_ERR("invalid parameter value\n");
 		return -1;
 	}
+	if (sql_buf == NULL) {
+		if (db_query_init() != 0)
+			return -2;
+	}
 
 	if (!_c) {
 		ret = snprintf(sql_buf, sql_buffer_size, "select * from %.*s ", CON_TABLE(_h)->len, CON_TABLE(_h)->s);
@@ -154,6 +158,10 @@ int db_do_insert_cmd(const db1_con_t* _h, const db_key_t* _k, const db_val_t* _v
 		LM_ERR("invalid parameter value\n");
 		return -1;
 	}
+        if (sql_buf == NULL) {
+                if (db_query_init() != 0)
+                        return -2;
+        }
 
 	if(mode==1)
 		ret = snprintf(sql_buf, sql_buffer_size, "insert delayed into %.*s (",
@@ -218,6 +226,10 @@ int db_do_delete(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _o,
 		LM_ERR("invalid parameter value\n");
 		return -1;
 	}
+        if (sql_buf == NULL) {
+                if (db_query_init() != 0)
+                        return -2;
+        }
 
 	ret = snprintf(sql_buf, sql_buffer_size, "delete from %.*s", CON_TABLE(_h)->len, CON_TABLE(_h)->s);
 	if (ret < 0 || ret >= sql_buffer_size) goto error;
@@ -261,6 +273,10 @@ int db_do_update(const db1_con_t* _h, const db_key_t* _k, const db_op_t* _o,
 		LM_ERR("invalid parameter value\n");
 		return -1;
 	}
+        if (sql_buf == NULL) {
+                if (db_query_init() != 0)
+                        return -2;
+        }
 
 	ret = snprintf(sql_buf, sql_buffer_size, "update %.*s set ", CON_TABLE(_h)->len, CON_TABLE(_h)->s);
 	if (ret < 0 || ret >= sql_buffer_size) goto error;
@@ -306,6 +322,10 @@ int db_do_replace(const db1_con_t* _h, const db_key_t* _k, const db_val_t* _v,
 		LM_ERR("invalid parameter value\n");
 		return -1;
 	}
+        if (sql_buf == NULL) {
+                if (db_query_init() != 0)
+                        return -2;
+        }
 
 	ret = snprintf(sql_buf, sql_buffer_size, "replace %.*s (", CON_TABLE(_h)->len, CON_TABLE(_h)->s);
 	if (ret < 0 || ret >= sql_buffer_size) goto error;